18702580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71933}}^1$

素因数の和:71955

約数の個数: 24

約数和(自身を含む): 42297192

約数和(自身を除く): 23594612

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71933, 143866, 287732, 359665, 719330, 935129, 1438660, 1870258, 3740516, 4675645, 9351290, 18702580]

約数ペア:

[(1, 18702580), (2, 9351290), (4, 4675645), (5, 3740516), (10, 1870258), (13, 1438660), (20, 935129), (26, 719330), (52, 359665), (65, 287732), (130, 143866), (260, 71933)]