138688280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{65419}}^1$

素因数の和:65483

約数の個数: 32

約数和(自身を含む): 317941200

約数和(自身を除く): 179252920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 65419, 130838, 261676, 327095, 523352, 654190, 1308380, 2616760, 3467207, 6934414, 13868828, 17336035, 27737656, 34672070, 69344140, 138688280]

約数ペア:

[(1, 138688280), (2, 69344140), (4, 34672070), (5, 27737656), (8, 17336035), (10, 13868828), (20, 6934414), (40, 3467207), (53, 2616760), (106, 1308380), (212, 654190), (265, 523352), (424, 327095), (530, 261676), (1060, 130838), (2120, 65419)]