31215340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{569}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 71053920

約数和(自身を除く): 39838580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 211, 260, 422, 569, 844, 1055, 1138, 2110, 2276, 2743, 2845, 4220, 5486, 5690, 7397, 10972, 11380, 13715, 14794, 27430, 29588, 36985, 54860, 73970, 120059, 147940, 240118, 480236, 600295, 1200590, 1560767, 2401180, 3121534, 6243068, 7803835, 15607670, 31215340]

約数ペア:

[(1, 31215340), (2, 15607670), (4, 7803835), (5, 6243068), (10, 3121534), (13, 2401180), (20, 1560767), (26, 1200590), (52, 600295), (65, 480236), (130, 240118), (211, 147940), (260, 120059), (422, 73970), (569, 54860), (844, 36985), (1055, 29588), (1138, 27430), (2110, 14794), (2276, 13715), (2743, 11380), (2845, 10972), (4220, 7397), (5486, 5690)]