81054740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311749}}^1$

素因数の和:311771

約数の個数: 24

約数和(自身を含む): 183309000

約数和(自身を除く): 102254260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311749, 623498, 1246996, 1558745, 3117490, 4052737, 6234980, 8105474, 16210948, 20263685, 40527370, 81054740]

約数ペア:

[(1, 81054740), (2, 40527370), (4, 20263685), (5, 16210948), (10, 8105474), (13, 6234980), (20, 4052737), (26, 3117490), (52, 1558745), (65, 1246996), (130, 623498), (260, 311749)]