123977620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{7817}}^1$

素因数の和:7900

約数の個数: 48

約数和(自身を含む): 285013008

約数和(自身を除く): 161035388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 7817, 7930, 15634, 15860, 31268, 39085, 78170, 101621, 156340, 203242, 406484, 476837, 508105, 953674, 1016210, 1907348, 2032420, 2384185, 4768370, 6198881, 9536740, 12397762, 24795524, 30994405, 61988810, 123977620]

約数ペア:

[(1, 123977620), (2, 61988810), (4, 30994405), (5, 24795524), (10, 12397762), (13, 9536740), (20, 6198881), (26, 4768370), (52, 2384185), (61, 2032420), (65, 1907348), (122, 1016210), (130, 953674), (244, 508105), (260, 476837), (305, 406484), (610, 203242), (793, 156340), (1220, 101621), (1586, 78170), (3172, 39085), (3965, 31268), (7817, 15860), (7930, 15634)]