640926468

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1471}}^1$

素因数の和:1527

約数の個数: 216

約数和(自身を含む): 2137873920

約数和(自身を除く): 1496947452

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 19, 21, 26, 28, 36, 38, 39, 42, 49, 52, 57, 63, 76, 78, 84, 91, 98, 114, 117, 126, 133, 147, 156, 171, 182, 196, 228, 234, 247, 252, 266, 273, 294, 342, 364, 399, 441, 468, 494, 532, 546, 588, 637, 684, 741, 798, 819, 882, 931, 988, 1092, 1197, 1274, 1471, 1482, 1596, 1638, 1729, 1764, 1862, 1911, 2223, 2394, 2548, 2793, 2942, 2964, 3276, 3458, 3724, 3822, 4413, 4446, 4788, 5187, 5586, 5733, 5884, 6916, 7644, 8379, 8826, 8892, 10297, 10374, 11172, 11466, 12103, 13239, 15561, 16758, 17652, 19123, 20594, 20748, 22932, 24206, 26478, 27949, 30891, 31122, 33516, 36309, 38246, 41188, 48412, 52956, 55898, 57369, 61782, 62244, 72079, 72618, 76492, 83847, 92673, 108927, 111796, 114738, 123564, 133861, 144158, 145236, 167694, 172107, 185346, 195643, 216237, 217854, 229476, 251541, 267722, 288316, 335388, 344214, 363337, 370692, 391286, 401583, 432474, 435708, 503082, 535444, 586929, 648711, 688428, 726674, 782572, 803166, 864948, 937027, 1006164, 1090011, 1173858, 1204749, 1297422, 1369501, 1453348, 1606332, 1760787, 1874054, 2180022, 2347716, 2409498, 2543359, 2594844, 2739002, 2811081, 3270033, 3521574, 3748108, 4108503, 4360044, 4818996, 5086718, 5478004, 5622162, 6540066, 7043148, 7630077, 8217006, 8433243, 10173436, 11244324, 12325509, 13080132, 15260154, 16434012, 16866486, 17803513, 22890231, 24651018, 30520308, 33732972, 35607026, 45780462, 49302036, 53410539, 71214052, 91560924, 106821078, 160231617, 213642156, 320463234, 640926468]

約数ペア:

[(1, 640926468), (2, 320463234), (3, 213642156), (4, 160231617), (6, 106821078), (7, 91560924), (9, 71214052), (12, 53410539), (13, 49302036), (14, 45780462), (18, 35607026), (19, 33732972), (21, 30520308), (26, 24651018), (28, 22890231), (36, 17803513), (38, 16866486), (39, 16434012), (42, 15260154), (49, 13080132), (52, 12325509), (57, 11244324), (63, 10173436), (76, 8433243), (78, 8217006), (84, 7630077), (91, 7043148), (98, 6540066), (114, 5622162), (117, 5478004), (126, 5086718), (133, 4818996), (147, 4360044), (156, 4108503), (171, 3748108), (182, 3521574), (196, 3270033), (228, 2811081), (234, 2739002), (247, 2594844), (252, 2543359), (266, 2409498), (273, 2347716), (294, 2180022), (342, 1874054), (364, 1760787), (399, 1606332), (441, 1453348), (468, 1369501), (494, 1297422), (532, 1204749), (546, 1173858), (588, 1090011), (637, 1006164), (684, 937027), (741, 864948), (798, 803166), (819, 782572), (882, 726674), (931, 688428), (988, 648711), (1092, 586929), (1197, 535444), (1274, 503082), (1471, 435708), (1482, 432474), (1596, 401583), (1638, 391286), (1729, 370692), (1764, 363337), (1862, 344214), (1911, 335388), (2223, 288316), (2394, 267722), (2548, 251541), (2793, 229476), (2942, 217854), (2964, 216237), (3276, 195643), (3458, 185346), (3724, 172107), (3822, 167694), (4413, 145236), (4446, 144158), (4788, 133861), (5187, 123564), (5586, 114738), (5733, 111796), (5884, 108927), (6916, 92673), (7644, 83847), (8379, 76492), (8826, 72618), (8892, 72079), (10297, 62244), (10374, 61782), (11172, 57369), (11466, 55898), (12103, 52956), (13239, 48412), (15561, 41188), (16758, 38246), (17652, 36309), (19123, 33516), (20594, 31122), (20748, 30891), (22932, 27949), (24206, 26478)]