217688940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{877}}^1$

素因数の和:1096

約数の個数: 144

約数和(自身を含む): 759350592

約数和(自身を除く): 541661652

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 197, 210, 252, 315, 394, 420, 591, 630, 788, 877, 985, 1182, 1260, 1379, 1754, 1773, 1970, 2364, 2631, 2758, 2955, 3508, 3546, 3940, 4137, 4385, 5262, 5516, 5910, 6139, 6895, 7092, 7893, 8274, 8770, 8865, 10524, 11820, 12278, 12411, 13155, 13790, 15786, 16548, 17540, 17730, 18417, 20685, 24556, 24822, 26310, 27580, 30695, 31572, 35460, 36834, 39465, 41370, 49644, 52620, 55251, 61390, 62055, 73668, 78930, 82740, 92085, 110502, 122780, 124110, 157860, 172769, 184170, 221004, 248220, 276255, 345538, 368340, 518307, 552510, 691076, 863845, 1036614, 1105020, 1209383, 1554921, 1727690, 2073228, 2418766, 2591535, 3109842, 3455380, 3628149, 4837532, 5183070, 6046915, 6219684, 7256298, 7774605, 10366140, 10884447, 12093830, 14512596, 15549210, 18140745, 21768894, 24187660, 31098420, 36281490, 43537788, 54422235, 72562980, 108844470, 217688940]

約数ペア:

[(1, 217688940), (2, 108844470), (3, 72562980), (4, 54422235), (5, 43537788), (6, 36281490), (7, 31098420), (9, 24187660), (10, 21768894), (12, 18140745), (14, 15549210), (15, 14512596), (18, 12093830), (20, 10884447), (21, 10366140), (28, 7774605), (30, 7256298), (35, 6219684), (36, 6046915), (42, 5183070), (45, 4837532), (60, 3628149), (63, 3455380), (70, 3109842), (84, 2591535), (90, 2418766), (105, 2073228), (126, 1727690), (140, 1554921), (180, 1209383), (197, 1105020), (210, 1036614), (252, 863845), (315, 691076), (394, 552510), (420, 518307), (591, 368340), (630, 345538), (788, 276255), (877, 248220), (985, 221004), (1182, 184170), (1260, 172769), (1379, 157860), (1754, 124110), (1773, 122780), (1970, 110502), (2364, 92085), (2631, 82740), (2758, 78930), (2955, 73668), (3508, 62055), (3546, 61390), (3940, 55251), (4137, 52620), (4385, 49644), (5262, 41370), (5516, 39465), (5910, 36834), (6139, 35460), (6895, 31572), (7092, 30695), (7893, 27580), (8274, 26310), (8770, 24822), (8865, 24556), (10524, 20685), (11820, 18417), (12278, 17730), (12411, 17540), (13155, 16548), (13790, 15786)]