139429640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{497963}}^1$

素因数の和:497981

約数の個数: 32

約数和(自身を含む): 358534080

約数和(自身を除く): 219104440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 497963, 995926, 1991852, 2489815, 3485741, 3983704, 4979630, 6971482, 9959260, 13942964, 17428705, 19918520, 27885928, 34857410, 69714820, 139429640]

約数ペア:

[(1, 139429640), (2, 69714820), (4, 34857410), (5, 27885928), (7, 19918520), (8, 17428705), (10, 13942964), (14, 9959260), (20, 6971482), (28, 4979630), (35, 3983704), (40, 3485741), (56, 2489815), (70, 1991852), (140, 995926), (280, 497963)]