21211911

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{14639}}^1$

素因数の和:14675

約数の個数: 24

約数和(自身を含む): 36541440

約数和(自身を除く): 15329529

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 14639, 43917, 102473, 131751, 307419, 336697, 922257, 1010091, 2356879, 3030273, 7070637, 21211911]

約数ペア:

[(1, 21211911), (3, 7070637), (7, 3030273), (9, 2356879), (21, 1010091), (23, 922257), (63, 336697), (69, 307419), (161, 131751), (207, 102473), (483, 43917), (1449, 14639)]