19987150

素因数分解:

$2^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{3881}}^1$

素因数の和:3996

約数の個数: 24

約数和(自身を含む): 37546704

約数和(自身を除く): 17559554

約数列:

[1, 2, 5, 10, 25, 50, 103, 206, 515, 1030, 2575, 3881, 5150, 7762, 19405, 38810, 97025, 194050, 399743, 799486, 1998715, 3997430, 9993575, 19987150]

約数ペア:

[(1, 19987150), (2, 9993575), (5, 3997430), (10, 1998715), (25, 799486), (50, 399743), (103, 194050), (206, 97025), (515, 38810), (1030, 19405), (2575, 7762), (3881, 5150)]