80419660

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{7219}}^1$

素因数の和:7785

約数の個数: 24

約数和(自身を含む): 169207920

約数和(自身を除く): 88788260

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 2228, 2785, 5570, 7219, 11140, 14438, 28876, 36095, 72190, 144380, 4020983, 8041966, 16083932, 20104915, 40209830, 80419660]

約数ペア:

[(1, 80419660), (2, 40209830), (4, 20104915), (5, 16083932), (10, 8041966), (20, 4020983), (557, 144380), (1114, 72190), (2228, 36095), (2785, 28876), (5570, 14438), (7219, 11140)]