18661895

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{211}}^1$

素因数の和:268

約数の個数: 36

約数和(自身を含む): 27624024

約数和(自身を除く): 8962129

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 211, 245, 361, 665, 931, 1055, 1477, 1805, 2527, 4009, 4655, 7385, 10339, 12635, 17689, 20045, 28063, 51695, 76171, 88445, 140315, 196441, 380855, 533197, 982205, 2665985, 3732379, 18661895]

約数ペア:

[(1, 18661895), (5, 3732379), (7, 2665985), (19, 982205), (35, 533197), (49, 380855), (95, 196441), (133, 140315), (211, 88445), (245, 76171), (361, 51695), (665, 28063), (931, 20045), (1055, 17689), (1477, 12635), (1805, 10339), (2527, 7385), (4009, 4655)]