18774925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1409}}^1$

素因数の和:1473

約数の個数: 24

約数和(自身を含む): 25701480

約数和(自身を除く): 6926555

約数列:

[1, 5, 13, 25, 41, 65, 205, 325, 533, 1025, 1409, 2665, 7045, 13325, 18317, 35225, 57769, 91585, 288845, 457925, 750997, 1444225, 3754985, 18774925]

約数ペア:

[(1, 18774925), (5, 3754985), (13, 1444225), (25, 750997), (41, 457925), (65, 288845), (205, 91585), (325, 57769), (533, 35225), (1025, 18317), (1409, 13325), (2665, 7045)]