13993025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 18525600

約数和(自身を除く): 4532575

約数列:

[1, 5, 19, 25, 89, 95, 331, 445, 475, 1655, 1691, 2225, 6289, 8275, 8455, 29459, 31445, 42275, 147295, 157225, 559721, 736475, 2798605, 13993025]

約数ペア:

[(1, 13993025), (5, 2798605), (19, 736475), (25, 559721), (89, 157225), (95, 147295), (331, 42275), (445, 31445), (475, 29459), (1655, 8455), (1691, 8275), (2225, 6289)]