20111740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{809}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 26427620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 809, 1130, 1243, 1618, 2260, 2486, 3236, 4045, 4972, 6215, 8090, 8899, 12430, 16180, 17798, 24860, 35596, 44495, 88990, 91417, 177980, 182834, 365668, 457085, 914170, 1005587, 1828340, 2011174, 4022348, 5027935, 10055870, 20111740]

約数ペア:

[(1, 20111740), (2, 10055870), (4, 5027935), (5, 4022348), (10, 2011174), (11, 1828340), (20, 1005587), (22, 914170), (44, 457085), (55, 365668), (110, 182834), (113, 177980), (220, 91417), (226, 88990), (452, 44495), (565, 35596), (809, 24860), (1130, 17798), (1243, 16180), (1618, 12430), (2260, 8899), (2486, 8090), (3236, 6215), (4045, 4972)]