12942760

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{659}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 29224800

約数和(自身を除く): 16282040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 659, 982, 1318, 1964, 2455, 2636, 3295, 3928, 4910, 5272, 6590, 9820, 13180, 19640, 26360, 323569, 647138, 1294276, 1617845, 2588552, 3235690, 6471380, 12942760]

約数ペア:

[(1, 12942760), (2, 6471380), (4, 3235690), (5, 2588552), (8, 1617845), (10, 1294276), (20, 647138), (40, 323569), (491, 26360), (659, 19640), (982, 13180), (1318, 9820), (1964, 6590), (2455, 5272), (2636, 4910), (3295, 3928)]