18862220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72547}}^1$

素因数の和:72569

約数の個数: 24

約数和(自身を含む): 42658224

約数和(自身を除く): 23796004

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72547, 145094, 290188, 362735, 725470, 943111, 1450940, 1886222, 3772444, 4715555, 9431110, 18862220]

約数ペア:

[(1, 18862220), (2, 9431110), (4, 4715555), (5, 3772444), (10, 1886222), (13, 1450940), (20, 943111), (26, 725470), (52, 362735), (65, 290188), (130, 145094), (260, 72547)]