21266609

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7038031

約数列:

[1, 7, 13, 17, 59, 91, 119, 221, 233, 413, 767, 1003, 1547, 1631, 3029, 3961, 5369, 7021, 13039, 13747, 21203, 27727, 51493, 91273, 96229, 178711, 233699, 360451, 1250977, 1635893, 3038087, 21266609]

約数ペア:

[(1, 21266609), (7, 3038087), (13, 1635893), (17, 1250977), (59, 360451), (91, 233699), (119, 178711), (221, 96229), (233, 91273), (413, 51493), (767, 27727), (1003, 21203), (1547, 13747), (1631, 13039), (3029, 7021), (3961, 5369)]