20185771216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{225167}}^1$

素因数の和:225619

約数の個数: 40

約数和(自身を含む): 42216297984

約数和(自身を除く): 22030526768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 431, 862, 1724, 3448, 5603, 6896, 11206, 22412, 44824, 89648, 225167, 450334, 900668, 1801336, 2927171, 3602672, 5854342, 11708684, 23417368, 46834736, 97046977, 194093954, 388187908, 776375816, 1261610701, 1552751632, 2523221402, 5046442804, 10092885608, 20185771216]

約数ペア:

[(1, 20185771216), (2, 10092885608), (4, 5046442804), (8, 2523221402), (13, 1552751632), (16, 1261610701), (26, 776375816), (52, 388187908), (104, 194093954), (208, 97046977), (431, 46834736), (862, 23417368), (1724, 11708684), (3448, 5854342), (5603, 3602672), (6896, 2927171), (11206, 1801336), (22412, 900668), (44824, 450334), (89648, 225167)]