78903940

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{36871}}^1$

素因数の和:36987

約数の個数: 24

約数和(自身を含む): 167251392

約数和(自身を除く): 88347452

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 36871, 73742, 147484, 184355, 368710, 737420, 3945197, 7890394, 15780788, 19725985, 39451970, 78903940]

約数ペア:

[(1, 78903940), (2, 39451970), (4, 19725985), (5, 15780788), (10, 7890394), (20, 3945197), (107, 737420), (214, 368710), (428, 184355), (535, 147484), (1070, 73742), (2140, 36871)]