25718960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18911}}^1$

素因数の和:18941

約数の個数: 40

約数和(自身を含む): 63317376

約数和(自身を除く): 37598416

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 18911, 37822, 75644, 94555, 151288, 189110, 302576, 321487, 378220, 642974, 756440, 1285948, 1512880, 1607435, 2571896, 3214870, 5143792, 6429740, 12859480, 25718960]

約数ペア:

[(1, 25718960), (2, 12859480), (4, 6429740), (5, 5143792), (8, 3214870), (10, 2571896), (16, 1607435), (17, 1512880), (20, 1285948), (34, 756440), (40, 642974), (68, 378220), (80, 321487), (85, 302576), (136, 189110), (170, 151288), (272, 94555), (340, 75644), (680, 37822), (1360, 18911)]