21874815

素因数分解:

$3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6659}}^1$

素因数の和:6743

約数の個数: 24

約数和(自身を含む): 38441520

約数和(自身を除く): 16566705

約数列:

[1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095, 3285, 6659, 19977, 33295, 59931, 99885, 299655, 486107, 1458321, 2430535, 4374963, 7291605, 21874815]

約数ペア:

[(1, 21874815), (3, 7291605), (5, 4374963), (9, 2430535), (15, 1458321), (45, 486107), (73, 299655), (219, 99885), (365, 59931), (657, 33295), (1095, 19977), (3285, 6659)]