13120840

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{991}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 29640960

約数和(自身を除く): 16520120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 991, 1324, 1655, 1982, 2648, 3310, 3964, 4955, 6620, 7928, 9910, 13240, 19820, 39640, 328021, 656042, 1312084, 1640105, 2624168, 3280210, 6560420, 13120840]

約数ペア:

[(1, 13120840), (2, 6560420), (4, 3280210), (5, 2624168), (8, 1640105), (10, 1312084), (20, 656042), (40, 328021), (331, 39640), (662, 19820), (991, 13240), (1324, 9910), (1655, 7928), (1982, 6620), (2648, 4955), (3310, 3964)]