18669950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{28723}}^1$

素因数の和:28748

約数の個数: 24

約数和(自身を含む): 37398648

約数和(自身を除く): 18728698

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 28723, 57446, 143615, 287230, 373399, 718075, 746798, 1436150, 1866995, 3733990, 9334975, 18669950]

約数ペア:

[(1, 18669950), (2, 9334975), (5, 3733990), (10, 1866995), (13, 1436150), (25, 746798), (26, 718075), (50, 373399), (65, 287230), (130, 143615), (325, 57446), (650, 28723)]