129777770

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{631}}^1$

素因数の和:926

約数の個数: 32

約数和(自身を含む): 237257856

約数和(自身を除く): 107480086

約数列:

[1, 2, 5, 10, 131, 157, 262, 314, 631, 655, 785, 1262, 1310, 1570, 3155, 6310, 20567, 41134, 82661, 99067, 102835, 165322, 198134, 205670, 413305, 495335, 826610, 990670, 12977777, 25955554, 64888885, 129777770]

約数ペア:

[(1, 129777770), (2, 64888885), (5, 25955554), (10, 12977777), (131, 990670), (157, 826610), (262, 495335), (314, 413305), (631, 205670), (655, 198134), (785, 165322), (1262, 102835), (1310, 99067), (1570, 82661), (3155, 41134), (6310, 20567)]