19418425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 26170200

約数和(自身を除く): 6751775

約数列:

[1, 5, 13, 25, 65, 149, 325, 401, 745, 1937, 2005, 3725, 5213, 9685, 10025, 26065, 48425, 59749, 130325, 298745, 776737, 1493725, 3883685, 19418425]

約数ペア:

[(1, 19418425), (5, 3883685), (13, 1493725), (25, 776737), (65, 298745), (149, 130325), (325, 59749), (401, 48425), (745, 26065), (1937, 10025), (2005, 9685), (3725, 5213)]