79540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:147

約数の個数: 24

約数和(自身を含む): 172872

約数和(自身を除く): 93332

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 388, 410, 485, 820, 970, 1940, 3977, 7954, 15908, 19885, 39770, 79540]

約数ペア:

[(1, 79540), (2, 39770), (4, 19885), (5, 15908), (10, 7954), (20, 3977), (41, 1940), (82, 970), (97, 820), (164, 485), (194, 410), (205, 388)]