20808220196

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{669419}}^1$

素因数の和:669851

約数の個数: 24

約数和(自身を含む): 38424708000

約数和(自身を除く): 17616487804

約数列:

[1, 2, 4, 19, 38, 76, 409, 818, 1636, 7771, 15542, 31084, 669419, 1338838, 2677676, 12718961, 25437922, 50875844, 273792371, 547584742, 1095169484, 5202055049, 10404110098, 20808220196]

約数ペア:

[(1, 20808220196), (2, 10404110098), (4, 5202055049), (19, 1095169484), (38, 547584742), (76, 273792371), (409, 50875844), (818, 25437922), (1636, 12718961), (7771, 2677676), (15542, 1338838), (31084, 669419)]