21211533

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10861}}^1$

素因数の和:10905

約数の個数: 24

約数和(自身を含む): 36148736

約数和(自身を除く): 14937203

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10861, 32583, 76027, 97749, 228081, 336691, 684243, 1010073, 2356837, 3030219, 7070511, 21211533]

約数ペア:

[(1, 21211533), (3, 7070511), (7, 3030219), (9, 2356837), (21, 1010073), (31, 684243), (63, 336691), (93, 228081), (217, 97749), (279, 76027), (651, 32583), (1953, 10861)]