85777780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20521}}^1$

素因数の和:20560

約数の個数: 48

約数和(自身を含む): 206861760

約数和(自身を除く): 121083980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 20521, 41042, 82084, 102605, 205210, 225731, 389899, 410420, 451462, 779798, 902924, 1128655, 1559596, 1949495, 2257310, 3898990, 4288889, 4514620, 7797980, 8577778, 17155556, 21444445, 42888890, 85777780]

約数ペア:

[(1, 85777780), (2, 42888890), (4, 21444445), (5, 17155556), (10, 8577778), (11, 7797980), (19, 4514620), (20, 4288889), (22, 3898990), (38, 2257310), (44, 1949495), (55, 1559596), (76, 1128655), (95, 902924), (110, 779798), (190, 451462), (209, 410420), (220, 389899), (380, 225731), (418, 205210), (836, 102605), (1045, 82084), (2090, 41042), (4180, 20521)]