1661140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6389}}^1$

素因数の和:6411

約数の個数: 24

約数和(自身を含む): 3757320

約数和(自身を除く): 2096180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 6389, 12778, 25556, 31945, 63890, 83057, 127780, 166114, 332228, 415285, 830570, 1661140]

約数ペア:

[(1, 1661140), (2, 830570), (4, 415285), (5, 332228), (10, 166114), (13, 127780), (20, 83057), (26, 63890), (52, 31945), (65, 25556), (130, 12778), (260, 6389)]