678242020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{258871}}^1$

素因数の和:259011

約数の個数: 24

約数和(自身を含む): 1435186368

約数和(自身を除く): 756944348

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 258871, 517742, 1035484, 1294355, 2588710, 5177420, 33912101, 67824202, 135648404, 169560505, 339121010, 678242020]

約数ペア:

[(1, 678242020), (2, 339121010), (4, 169560505), (5, 135648404), (10, 67824202), (20, 33912101), (131, 5177420), (262, 2588710), (524, 1294355), (655, 1035484), (1310, 517742), (2620, 258871)]