78179980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{49481}}^1$

素因数の和:49569

約数の個数: 24

約数和(自身を含む): 166259520

約数和(自身を除く): 88079540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 49481, 98962, 197924, 247405, 494810, 989620, 3908999, 7817998, 15635996, 19544995, 39089990, 78179980]

約数ペア:

[(1, 78179980), (2, 39089990), (4, 19544995), (5, 15635996), (10, 7817998), (20, 3908999), (79, 989620), (158, 494810), (316, 247405), (395, 197924), (790, 98962), (1580, 49481)]