20803239940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{997279}}^1$

素因数の和:997444

約数の個数: 48

約数和(自身を含む): 50262912000

約数和(自身を除く): 29459672060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 4172, 5215, 10430, 20860, 997279, 1994558, 3989116, 4986395, 6980953, 9972790, 13961906, 19945580, 27923812, 34904765, 69809530, 139619060, 148594571, 297189142, 594378284, 742972855, 1040161997, 1485945710, 2080323994, 2971891420, 4160647988, 5200809985, 10401619970, 20803239940]

約数ペア:

[(1, 20803239940), (2, 10401619970), (4, 5200809985), (5, 4160647988), (7, 2971891420), (10, 2080323994), (14, 1485945710), (20, 1040161997), (28, 742972855), (35, 594378284), (70, 297189142), (140, 148594571), (149, 139619060), (298, 69809530), (596, 34904765), (745, 27923812), (1043, 19945580), (1490, 13961906), (2086, 9972790), (2980, 6980953), (4172, 4986395), (5215, 3989116), (10430, 1994558), (20860, 997279)]