21691518

素因数分解:

$2^1\times 3^1\times {\mathrm{67}}^1\times {\mathrm{53959}}^1$

素因数の和:54031

約数の個数: 16

約数和(自身を含む): 44031360

約数和(自身を除く): 22339842

約数列:

[1, 2, 3, 6, 67, 134, 201, 402, 53959, 107918, 161877, 323754, 3615253, 7230506, 10845759, 21691518]

約数ペア:

[(1, 21691518), (2, 10845759), (3, 7230506), (6, 3615253), (67, 323754), (134, 161877), (201, 107918), (402, 53959)]