64806940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{1087}}^1$

素因数の和:1378

約数の個数: 48

約数和(自身を含む): 149151744

約数和(自身を除く): 84344804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 271, 542, 1084, 1087, 1355, 2174, 2710, 2981, 4348, 5420, 5435, 5962, 10870, 11924, 11957, 14905, 21740, 23914, 29810, 47828, 59620, 59785, 119570, 239140, 294577, 589154, 1178308, 1472885, 2945770, 3240347, 5891540, 6480694, 12961388, 16201735, 32403470, 64806940]

約数ペア:

[(1, 64806940), (2, 32403470), (4, 16201735), (5, 12961388), (10, 6480694), (11, 5891540), (20, 3240347), (22, 2945770), (44, 1472885), (55, 1178308), (110, 589154), (220, 294577), (271, 239140), (542, 119570), (1084, 59785), (1087, 59620), (1355, 47828), (2174, 29810), (2710, 23914), (2981, 21740), (4348, 14905), (5420, 11957), (5435, 11924), (5962, 10870)]