18187444940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{517571}}^1$

素因数の和:517838

約数の個数: 48

約数和(自身を含む): 43823856384

約数和(自身を除く): 25636411444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 1004, 1255, 1757, 2510, 3514, 5020, 7028, 8785, 17570, 35140, 517571, 1035142, 2070284, 2587855, 3622997, 5175710, 7245994, 10351420, 14491988, 18114985, 36229970, 72459940, 129910321, 259820642, 519641284, 649551605, 909372247, 1299103210, 1818744494, 2598206420, 3637488988, 4546861235, 9093722470, 18187444940]

約数ペア:

[(1, 18187444940), (2, 9093722470), (4, 4546861235), (5, 3637488988), (7, 2598206420), (10, 1818744494), (14, 1299103210), (20, 909372247), (28, 649551605), (35, 519641284), (70, 259820642), (140, 129910321), (251, 72459940), (502, 36229970), (1004, 18114985), (1255, 14491988), (1757, 10351420), (2510, 7245994), (3514, 5175710), (5020, 3622997), (7028, 2587855), (8785, 2070284), (17570, 1035142), (35140, 517571)]