81247660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1481}}^1$

素因数の和:1714

約数の個数: 48

約数和(自身を含む): 184740192

約数和(自身を除く): 103492532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 211, 260, 422, 844, 1055, 1481, 2110, 2743, 2962, 4220, 5486, 5924, 7405, 10972, 13715, 14810, 19253, 27430, 29620, 38506, 54860, 77012, 96265, 192530, 312491, 385060, 624982, 1249964, 1562455, 3124910, 4062383, 6249820, 8124766, 16249532, 20311915, 40623830, 81247660]

約数ペア:

[(1, 81247660), (2, 40623830), (4, 20311915), (5, 16249532), (10, 8124766), (13, 6249820), (20, 4062383), (26, 3124910), (52, 1562455), (65, 1249964), (130, 624982), (211, 385060), (260, 312491), (422, 192530), (844, 96265), (1055, 77012), (1481, 54860), (2110, 38506), (2743, 29620), (2962, 27430), (4220, 19253), (5486, 14810), (5924, 13715), (7405, 10972)]