80307980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{129529}}^1$

素因数の和:129569

約数の個数: 24

約数和(自身を含む): 174088320

約数和(自身を除く): 93780340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 129529, 259058, 518116, 647645, 1295290, 2590580, 4015399, 8030798, 16061596, 20076995, 40153990, 80307980]

約数ペア:

[(1, 80307980), (2, 40153990), (4, 20076995), (5, 16061596), (10, 8030798), (20, 4015399), (31, 2590580), (62, 1295290), (124, 647645), (155, 518116), (310, 259058), (620, 129529)]