21490821

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5867}}^1$

素因数の和:5921

約数の個数: 24

約数和(自身を含む): 34785504

約数和(自身を除く): 13294683

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 1221, 3663, 5867, 17601, 52803, 64537, 193611, 217079, 580833, 651237, 1953711, 2387869, 7163607, 21490821]

約数ペア:

[(1, 21490821), (3, 7163607), (9, 2387869), (11, 1953711), (33, 651237), (37, 580833), (99, 217079), (111, 193611), (333, 64537), (407, 52803), (1221, 17601), (3663, 5867)]