20681843

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{461}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 27941760

約数和(自身を除く): 7259917

約数列:

[1, 7, 13, 17, 29, 91, 119, 203, 221, 377, 461, 493, 1547, 2639, 3227, 3451, 5993, 6409, 7837, 13369, 41951, 44863, 54859, 93583, 101881, 173797, 227273, 713167, 1216579, 1590911, 2954549, 20681843]

約数ペア:

[(1, 20681843), (7, 2954549), (13, 1590911), (17, 1216579), (29, 713167), (91, 227273), (119, 173797), (203, 101881), (221, 93583), (377, 54859), (461, 44863), (493, 41951), (1547, 13369), (2639, 7837), (3227, 6409), (3451, 5993)]