81138110

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1997}}^1$

素因数の和:2260

約数の個数: 32

約数和(自身を含む): 155364480

約数和(自身を除く): 74226370

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 239, 478, 1195, 1997, 2390, 3994, 4063, 8126, 9985, 19970, 20315, 33949, 40630, 67898, 169745, 339490, 477283, 954566, 2386415, 4772830, 8113811, 16227622, 40569055, 81138110]

約数ペア:

[(1, 81138110), (2, 40569055), (5, 16227622), (10, 8113811), (17, 4772830), (34, 2386415), (85, 954566), (170, 477283), (239, 339490), (478, 169745), (1195, 67898), (1997, 40630), (2390, 33949), (3994, 20315), (4063, 19970), (8126, 9985)]