515080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 1180800

約数和(自身を除く): 665720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 163, 316, 326, 395, 632, 652, 790, 815, 1304, 1580, 1630, 3160, 3260, 6520, 12877, 25754, 51508, 64385, 103016, 128770, 257540, 515080]

約数ペア:

[(1, 515080), (2, 257540), (4, 128770), (5, 103016), (8, 64385), (10, 51508), (20, 25754), (40, 12877), (79, 6520), (158, 3260), (163, 3160), (316, 1630), (326, 1580), (395, 1304), (632, 815), (652, 790)]