20877740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1361}}^1$

素因数の和:1442

約数の個数: 48

約数和(自身を含む): 48051360

約数和(自身を除く): 27173620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 236, 260, 295, 590, 767, 1180, 1361, 1534, 2722, 3068, 3835, 5444, 6805, 7670, 13610, 15340, 17693, 27220, 35386, 70772, 80299, 88465, 160598, 176930, 321196, 353860, 401495, 802990, 1043887, 1605980, 2087774, 4175548, 5219435, 10438870, 20877740]

約数ペア:

[(1, 20877740), (2, 10438870), (4, 5219435), (5, 4175548), (10, 2087774), (13, 1605980), (20, 1043887), (26, 802990), (52, 401495), (59, 353860), (65, 321196), (118, 176930), (130, 160598), (236, 88465), (260, 80299), (295, 70772), (590, 35386), (767, 27220), (1180, 17693), (1361, 15340), (1534, 13610), (2722, 7670), (3068, 6805), (3835, 5444)]