21967325

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:581

約数の個数: 24

約数和(自身を含む): 29016000

約数和(自身を除く): 7048675

約数列:

[1, 5, 19, 25, 95, 103, 449, 475, 515, 1957, 2245, 2575, 8531, 9785, 11225, 42655, 46247, 48925, 213275, 231235, 878693, 1156175, 4393465, 21967325]

約数ペア:

[(1, 21967325), (5, 4393465), (19, 1156175), (25, 878693), (95, 231235), (103, 213275), (449, 48925), (475, 46247), (515, 42655), (1957, 11225), (2245, 9785), (2575, 8531)]