19801271

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{587}}^1$

素因数の和:734

約数の個数: 16

約数和(自身を含む): 23331840

約数和(自身を除く): 3530569

約数列:

[1, 7, 61, 79, 427, 553, 587, 4109, 4819, 33733, 35807, 46373, 250649, 324611, 2828753, 19801271]

約数ペア:

[(1, 19801271), (7, 2828753), (61, 324611), (79, 250649), (427, 46373), (553, 35807), (587, 33733), (4109, 4819)]