257279540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59281}}^1$

素因数の和:59328

約数の個数: 48

約数和(自身を含む): 637400064

約数和(自身を除く): 380120524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 59281, 118562, 237124, 296405, 414967, 592810, 829934, 1185620, 1659868, 1837711, 2074835, 3675422, 4149670, 7350844, 8299340, 9188555, 12863977, 18377110, 25727954, 36754220, 51455908, 64319885, 128639770, 257279540]

約数ペア:

[(1, 257279540), (2, 128639770), (4, 64319885), (5, 51455908), (7, 36754220), (10, 25727954), (14, 18377110), (20, 12863977), (28, 9188555), (31, 8299340), (35, 7350844), (62, 4149670), (70, 3675422), (124, 2074835), (140, 1837711), (155, 1659868), (217, 1185620), (310, 829934), (434, 592810), (620, 414967), (868, 296405), (1085, 237124), (2170, 118562), (4340, 59281)]