81406575

素因数分解:

$3^2\times 5^2\times {\mathrm{361807}}^1$

素因数の和:361823

約数の個数: 18

約数和(自身を含む): 145808624

約数和(自身を除く): 64402049

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 361807, 1085421, 1809035, 3256263, 5427105, 9045175, 16281315, 27135525, 81406575]

約数ペア:

[(1, 81406575), (3, 27135525), (5, 16281315), (9, 9045175), (15, 5427105), (25, 3256263), (45, 1809035), (75, 1085421), (225, 361807)]