81339940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{1117}}^1$

素因数の和:1468

約数の個数: 48

約数和(自身を含む): 187072704

約数和(自身を除く): 105732764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 331, 662, 1117, 1324, 1655, 2234, 3310, 3641, 4468, 5585, 6620, 7282, 11170, 12287, 14564, 18205, 22340, 24574, 36410, 49148, 61435, 72820, 122870, 245740, 369727, 739454, 1478908, 1848635, 3697270, 4066997, 7394540, 8133994, 16267988, 20334985, 40669970, 81339940]

約数ペア:

[(1, 81339940), (2, 40669970), (4, 20334985), (5, 16267988), (10, 8133994), (11, 7394540), (20, 4066997), (22, 3697270), (44, 1848635), (55, 1478908), (110, 739454), (220, 369727), (331, 245740), (662, 122870), (1117, 72820), (1324, 61435), (1655, 49148), (2234, 36410), (3310, 24574), (3641, 22340), (4468, 18205), (5585, 14564), (6620, 12287), (7282, 11170)]