8281420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 20059200

約数和(自身を除く): 11777780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 397, 596, 745, 794, 1043, 1490, 1588, 1985, 2086, 2779, 2980, 3970, 4172, 5215, 5558, 7940, 10430, 11116, 13895, 20860, 27790, 55580, 59153, 118306, 236612, 295765, 414071, 591530, 828142, 1183060, 1656284, 2070355, 4140710, 8281420]

約数ペア:

[(1, 8281420), (2, 4140710), (4, 2070355), (5, 1656284), (7, 1183060), (10, 828142), (14, 591530), (20, 414071), (28, 295765), (35, 236612), (70, 118306), (140, 59153), (149, 55580), (298, 27790), (397, 20860), (596, 13895), (745, 11116), (794, 10430), (1043, 7940), (1490, 5558), (1588, 5215), (1985, 4172), (2086, 3970), (2779, 2980)]