778804940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{12437}}^1$

素因数の和:12578

約数の個数: 48

約数和(自身を含む): 1705100544

約数和(自身を除く): 926295604

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 101, 124, 155, 202, 310, 404, 505, 620, 1010, 2020, 3131, 6262, 12437, 12524, 15655, 24874, 31310, 49748, 62185, 62620, 124370, 248740, 385547, 771094, 1256137, 1542188, 1927735, 2512274, 3855470, 5024548, 6280685, 7710940, 12561370, 25122740, 38940247, 77880494, 155760988, 194701235, 389402470, 778804940]

約数ペア:

[(1, 778804940), (2, 389402470), (4, 194701235), (5, 155760988), (10, 77880494), (20, 38940247), (31, 25122740), (62, 12561370), (101, 7710940), (124, 6280685), (155, 5024548), (202, 3855470), (310, 2512274), (404, 1927735), (505, 1542188), (620, 1256137), (1010, 771094), (2020, 385547), (3131, 248740), (6262, 124370), (12437, 62620), (12524, 62185), (15655, 49748), (24874, 31310)]