18863945

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 23236608

約数和(自身を除く): 4372663

約数列:

[1, 5, 61, 127, 305, 487, 635, 2435, 7747, 29707, 38735, 61849, 148535, 309245, 3772789, 18863945]

約数ペア:

[(1, 18863945), (5, 3772789), (61, 309245), (127, 148535), (305, 61849), (487, 38735), (635, 29707), (2435, 7747)]