18721235

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{983}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 24300864

約数和(自身を除く): 5579629

約数列:

[1, 5, 13, 65, 293, 983, 1465, 3809, 4915, 12779, 19045, 63895, 288019, 1440095, 3744247, 18721235]

約数ペア:

[(1, 18721235), (5, 3744247), (13, 1440095), (65, 288019), (293, 63895), (983, 19045), (1465, 12779), (3809, 4915)]