18946460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72871}}^1$

素因数の和:72893

約数の個数: 24

約数和(自身を含む): 42848736

約数和(自身を除く): 23902276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72871, 145742, 291484, 364355, 728710, 947323, 1457420, 1894646, 3789292, 4736615, 9473230, 18946460]

約数ペア:

[(1, 18946460), (2, 9473230), (4, 4736615), (5, 3789292), (10, 1894646), (13, 1457420), (20, 947323), (26, 728710), (52, 364355), (65, 291484), (130, 145742), (260, 72871)]