12813980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{33721}}^1$

素因数の和:33749

約数の個数: 24

約数和(自身を含む): 28326480

約数和(自身を除く): 15512500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 33721, 67442, 134884, 168605, 337210, 640699, 674420, 1281398, 2562796, 3203495, 6406990, 12813980]

約数ペア:

[(1, 12813980), (2, 6406990), (4, 3203495), (5, 2562796), (10, 1281398), (19, 674420), (20, 640699), (38, 337210), (76, 168605), (95, 134884), (190, 67442), (380, 33721)]