21718371

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 31868928

約数和(自身を除く): 10150557

約数列:

[1, 3, 23, 37, 47, 69, 111, 141, 181, 543, 851, 1081, 1739, 2553, 3243, 4163, 5217, 6697, 8507, 12489, 20091, 25521, 39997, 119991, 154031, 195661, 314759, 462093, 586983, 944277, 7239457, 21718371]

約数ペア:

[(1, 21718371), (3, 7239457), (23, 944277), (37, 586983), (47, 462093), (69, 314759), (111, 195661), (141, 154031), (181, 119991), (543, 39997), (851, 25521), (1081, 20091), (1739, 12489), (2553, 8507), (3243, 6697), (4163, 5217)]