18837325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 25389000

約数和(自身を除く): 6551675

約数列:

[1, 5, 13, 25, 65, 149, 325, 389, 745, 1937, 1945, 3725, 5057, 9685, 9725, 25285, 48425, 57961, 126425, 289805, 753493, 1449025, 3767465, 18837325]

約数ペア:

[(1, 18837325), (5, 3767465), (13, 1449025), (25, 753493), (65, 289805), (149, 126425), (325, 57961), (389, 48425), (745, 25285), (1937, 9725), (1945, 9685), (3725, 5057)]