21183253

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 28224000

約数和(自身を除く): 7040747

約数列:

[1, 7, 13, 23, 29, 91, 161, 203, 299, 349, 377, 667, 2093, 2443, 2639, 4537, 4669, 8027, 8671, 10121, 31759, 56189, 60697, 70847, 104351, 131573, 232783, 730457, 921011, 1629481, 3026179, 21183253]

約数ペア:

[(1, 21183253), (7, 3026179), (13, 1629481), (23, 921011), (29, 730457), (91, 232783), (161, 131573), (203, 104351), (299, 70847), (349, 60697), (377, 56189), (667, 31759), (2093, 10121), (2443, 8671), (2639, 8027), (4537, 4669)]