87683980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{31541}}^1$

素因数の和:31689

約数の個数: 24

約数和(自身を含む): 185466960

約数和(自身を除く): 97782980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 31541, 63082, 126164, 157705, 315410, 630820, 4384199, 8768398, 17536796, 21920995, 43841990, 87683980]

約数ペア:

[(1, 87683980), (2, 43841990), (4, 21920995), (5, 17536796), (10, 8768398), (20, 4384199), (139, 630820), (278, 315410), (556, 157705), (695, 126164), (1390, 63082), (2780, 31541)]