8649620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1993}}^1$

素因数の和:2040

約数の個数: 48

約数和(自身を含む): 21439488

約数和(自身を除く): 12789868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 1993, 2170, 3986, 4340, 7972, 9965, 13951, 19930, 27902, 39860, 55804, 61783, 69755, 123566, 139510, 247132, 279020, 308915, 432481, 617830, 864962, 1235660, 1729924, 2162405, 4324810, 8649620]

約数ペア:

[(1, 8649620), (2, 4324810), (4, 2162405), (5, 1729924), (7, 1235660), (10, 864962), (14, 617830), (20, 432481), (28, 308915), (31, 279020), (35, 247132), (62, 139510), (70, 123566), (124, 69755), (140, 61783), (155, 55804), (217, 39860), (310, 27902), (434, 19930), (620, 13951), (868, 9965), (1085, 7972), (1993, 4340), (2170, 3986)]