21677649

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 35721216

約数和(自身を除く): 14043567

約数列:

[1, 3, 7, 21, 31, 49, 67, 71, 93, 147, 201, 213, 217, 469, 497, 651, 1407, 1491, 1519, 2077, 2201, 3283, 3479, 4557, 4757, 6231, 6603, 9849, 10437, 14271, 14539, 15407, 33299, 43617, 46221, 99897, 101773, 107849, 147467, 233093, 305319, 323547, 442401, 699279, 1032269, 3096807, 7225883, 21677649]

約数ペア:

[(1, 21677649), (3, 7225883), (7, 3096807), (21, 1032269), (31, 699279), (49, 442401), (67, 323547), (71, 305319), (93, 233093), (147, 147467), (201, 107849), (213, 101773), (217, 99897), (469, 46221), (497, 43617), (651, 33299), (1407, 15407), (1491, 14539), (1519, 14271), (2077, 10437), (2201, 9849), (3283, 6603), (3479, 6231), (4557, 4757)]