13520840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2153}}^1$

素因数の和:2321

約数の個数: 32

約数和(自身を含む): 30629880

約数和(自身を除く): 17109040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2153, 3140, 4306, 6280, 8612, 10765, 17224, 21530, 43060, 86120, 338021, 676042, 1352084, 1690105, 2704168, 3380210, 6760420, 13520840]

約数ペア:

[(1, 13520840), (2, 6760420), (4, 3380210), (5, 2704168), (8, 1690105), (10, 1352084), (20, 676042), (40, 338021), (157, 86120), (314, 43060), (628, 21530), (785, 17224), (1256, 10765), (1570, 8612), (2153, 6280), (3140, 4306)]