20683130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 40294800

約数和(自身を除く): 19611670

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 389, 409, 778, 818, 1945, 2045, 3890, 4090, 5057, 5317, 10114, 10634, 25285, 26585, 50570, 53170, 159101, 318202, 795505, 1591010, 2068313, 4136626, 10341565, 20683130]

約数ペア:

[(1, 20683130), (2, 10341565), (5, 4136626), (10, 2068313), (13, 1591010), (26, 795505), (65, 318202), (130, 159101), (389, 53170), (409, 50570), (778, 26585), (818, 25285), (1945, 10634), (2045, 10114), (3890, 5317), (4090, 5057)]