21405828

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{61511}}^1$

素因数の和:61547

約数の個数: 24

約数和(自身を含む): 51670080

約数和(自身を除く): 30264252

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 174, 348, 61511, 123022, 184533, 246044, 369066, 738132, 1783819, 3567638, 5351457, 7135276, 10702914, 21405828]

約数ペア:

[(1, 21405828), (2, 10702914), (3, 7135276), (4, 5351457), (6, 3567638), (12, 1783819), (29, 738132), (58, 369066), (87, 246044), (116, 184533), (174, 123022), (348, 61511)]