647978940

素因数分解:

$2^2\times 3^6\times 5^1\times 7^2\times {\mathrm{907}}^1$

素因数の和:948

約数の個数: 252

約数和(自身を含む): 2375910936

約数和(自身を除く): 1727931996

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 243, 245, 252, 270, 294, 315, 324, 378, 405, 420, 441, 486, 490, 540, 567, 588, 630, 729, 735, 756, 810, 882, 907, 945, 972, 980, 1134, 1215, 1260, 1323, 1458, 1470, 1620, 1701, 1764, 1814, 1890, 2205, 2268, 2430, 2646, 2721, 2835, 2916, 2940, 3402, 3628, 3645, 3780, 3969, 4410, 4535, 4860, 5103, 5292, 5442, 5670, 6349, 6615, 6804, 7290, 7938, 8163, 8505, 8820, 9070, 10206, 10884, 11340, 11907, 12698, 13230, 13605, 14580, 15876, 16326, 17010, 18140, 19047, 19845, 20412, 23814, 24489, 25396, 25515, 26460, 27210, 31745, 32652, 34020, 35721, 38094, 39690, 40815, 44443, 47628, 48978, 51030, 54420, 57141, 59535, 63490, 71442, 73467, 76188, 79380, 81630, 88886, 95235, 97956, 102060, 114282, 119070, 122445, 126980, 133329, 142884, 146934, 163260, 171423, 177772, 178605, 190470, 220401, 222215, 228564, 238140, 244890, 266658, 285705, 293868, 342846, 357210, 367335, 380940, 399987, 440802, 444430, 489780, 514269, 533316, 571410, 661203, 666645, 685692, 714420, 734670, 799974, 857115, 881604, 888860, 1028538, 1102005, 1142820, 1199961, 1322406, 1333290, 1469340, 1542807, 1599948, 1714230, 1999935, 2057076, 2204010, 2399922, 2571345, 2644812, 2666580, 3085614, 3306015, 3428460, 3599883, 3999870, 4408020, 4628421, 4799844, 5142690, 5999805, 6171228, 6612030, 7199766, 7714035, 7999740, 9256842, 10285380, 10799649, 11999610, 13224060, 14399532, 15428070, 17999415, 18513684, 21599298, 23142105, 23999220, 30856140, 32398947, 35998830, 43198596, 46284210, 53998245, 64797894, 71997660, 92568420, 107996490, 129595788, 161994735, 215992980, 323989470, 647978940]

約数ペア:

[(1, 647978940), (2, 323989470), (3, 215992980), (4, 161994735), (5, 129595788), (6, 107996490), (7, 92568420), (9, 71997660), (10, 64797894), (12, 53998245), (14, 46284210), (15, 43198596), (18, 35998830), (20, 32398947), (21, 30856140), (27, 23999220), (28, 23142105), (30, 21599298), (35, 18513684), (36, 17999415), (42, 15428070), (45, 14399532), (49, 13224060), (54, 11999610), (60, 10799649), (63, 10285380), (70, 9256842), (81, 7999740), (84, 7714035), (90, 7199766), (98, 6612030), (105, 6171228), (108, 5999805), (126, 5142690), (135, 4799844), (140, 4628421), (147, 4408020), (162, 3999870), (180, 3599883), (189, 3428460), (196, 3306015), (210, 3085614), (243, 2666580), (245, 2644812), (252, 2571345), (270, 2399922), (294, 2204010), (315, 2057076), (324, 1999935), (378, 1714230), (405, 1599948), (420, 1542807), (441, 1469340), (486, 1333290), (490, 1322406), (540, 1199961), (567, 1142820), (588, 1102005), (630, 1028538), (729, 888860), (735, 881604), (756, 857115), (810, 799974), (882, 734670), (907, 714420), (945, 685692), (972, 666645), (980, 661203), (1134, 571410), (1215, 533316), (1260, 514269), (1323, 489780), (1458, 444430), (1470, 440802), (1620, 399987), (1701, 380940), (1764, 367335), (1814, 357210), (1890, 342846), (2205, 293868), (2268, 285705), (2430, 266658), (2646, 244890), (2721, 238140), (2835, 228564), (2916, 222215), (2940, 220401), (3402, 190470), (3628, 178605), (3645, 177772), (3780, 171423), (3969, 163260), (4410, 146934), (4535, 142884), (4860, 133329), (5103, 126980), (5292, 122445), (5442, 119070), (5670, 114282), (6349, 102060), (6615, 97956), (6804, 95235), (7290, 88886), (7938, 81630), (8163, 79380), (8505, 76188), (8820, 73467), (9070, 71442), (10206, 63490), (10884, 59535), (11340, 57141), (11907, 54420), (12698, 51030), (13230, 48978), (13605, 47628), (14580, 44443), (15876, 40815), (16326, 39690), (17010, 38094), (18140, 35721), (19047, 34020), (19845, 32652), (20412, 31745), (23814, 27210), (24489, 26460), (25396, 25515)]