18411875

素因数分解:

$5^4\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:440

約数の個数: 20

約数和(自身を含む): 23336280

約数和(自身を除く): 4924405

約数列:

[1, 5, 25, 89, 125, 331, 445, 625, 1655, 2225, 8275, 11125, 29459, 41375, 55625, 147295, 206875, 736475, 3682375, 18411875]

約数ペア:

[(1, 18411875), (5, 3682375), (25, 736475), (89, 206875), (125, 147295), (331, 55625), (445, 41375), (625, 29459), (1655, 11125), (2225, 8275)]