638896860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1973}}^1$

素因数の和:2252

約数の個数: 144

約数和(自身を含む): 2224587456

約数和(自身を除く): 1585690596

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, 210, 252, 257, 315, 420, 514, 630, 771, 1028, 1260, 1285, 1542, 1799, 1973, 2313, 2570, 3084, 3598, 3855, 3946, 4626, 5140, 5397, 5919, 7196, 7710, 7892, 8995, 9252, 9865, 10794, 11565, 11838, 13811, 15420, 16191, 17757, 17990, 19730, 21588, 23130, 23676, 26985, 27622, 29595, 32382, 35514, 35980, 39460, 41433, 46260, 53970, 55244, 59190, 64764, 69055, 71028, 80955, 82866, 88785, 107940, 118380, 124299, 138110, 161910, 165732, 177570, 207165, 248598, 276220, 323820, 355140, 414330, 497196, 507061, 621495, 828660, 1014122, 1242990, 1521183, 2028244, 2485980, 2535305, 3042366, 3549427, 4563549, 5070610, 6084732, 7098854, 7605915, 9127098, 10141220, 10648281, 14197708, 15211830, 17747135, 18254196, 21296562, 22817745, 30423660, 31944843, 35494270, 42593124, 45635490, 53241405, 63889686, 70988540, 91270980, 106482810, 127779372, 159724215, 212965620, 319448430, 638896860]

約数ペア:

[(1, 638896860), (2, 319448430), (3, 212965620), (4, 159724215), (5, 127779372), (6, 106482810), (7, 91270980), (9, 70988540), (10, 63889686), (12, 53241405), (14, 45635490), (15, 42593124), (18, 35494270), (20, 31944843), (21, 30423660), (28, 22817745), (30, 21296562), (35, 18254196), (36, 17747135), (42, 15211830), (45, 14197708), (60, 10648281), (63, 10141220), (70, 9127098), (84, 7605915), (90, 7098854), (105, 6084732), (126, 5070610), (140, 4563549), (180, 3549427), (210, 3042366), (252, 2535305), (257, 2485980), (315, 2028244), (420, 1521183), (514, 1242990), (630, 1014122), (771, 828660), (1028, 621495), (1260, 507061), (1285, 497196), (1542, 414330), (1799, 355140), (1973, 323820), (2313, 276220), (2570, 248598), (3084, 207165), (3598, 177570), (3855, 165732), (3946, 161910), (4626, 138110), (5140, 124299), (5397, 118380), (5919, 107940), (7196, 88785), (7710, 82866), (7892, 80955), (8995, 71028), (9252, 69055), (9865, 64764), (10794, 59190), (11565, 55244), (11838, 53970), (13811, 46260), (15420, 41433), (16191, 39460), (17757, 35980), (17990, 35514), (19730, 32382), (21588, 29595), (23130, 27622), (23676, 26985)]