257436355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{11971}}^1$

素因数の和:12027

約数の個数: 32

約数和(自身を含む): 372377088

約数和(自身を除く): 114940733

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 1265, 1955, 4301, 11971, 21505, 59855, 131681, 203507, 275333, 658405, 1017535, 1376665, 2238577, 3028663, 4680661, 11192885, 15143315, 23403305, 51487271, 257436355]

約数ペア:

[(1, 257436355), (5, 51487271), (11, 23403305), (17, 15143315), (23, 11192885), (55, 4680661), (85, 3028663), (115, 2238577), (187, 1376665), (253, 1017535), (391, 658405), (935, 275333), (1265, 203507), (1955, 131681), (4301, 59855), (11971, 21505)]