668922680

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{127657}}^1$

素因数の和:127799

約数の個数: 32

約数和(自身を含む): 1516577040

約数和(自身を除く): 847654360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 127657, 255314, 510628, 638285, 1021256, 1276570, 2553140, 5106280, 16723067, 33446134, 66892268, 83615335, 133784536, 167230670, 334461340, 668922680]

約数ペア:

[(1, 668922680), (2, 334461340), (4, 167230670), (5, 133784536), (8, 83615335), (10, 66892268), (20, 33446134), (40, 16723067), (131, 5106280), (262, 2553140), (524, 1276570), (655, 1021256), (1048, 638285), (1310, 510628), (2620, 255314), (5240, 127657)]