18868479

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2731}}^1$

素因数の和:2795

約数の個数: 24

約数和(自身を含む): 29899008

約数和(自身を除く): 11030529

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2731, 6909, 8193, 19117, 57351, 128357, 133819, 385071, 401457, 898499, 2695497, 6289493, 18868479]

約数ペア:

[(1, 18868479), (3, 6289493), (7, 2695497), (21, 898499), (47, 401457), (49, 385071), (141, 133819), (147, 128357), (329, 57351), (987, 19117), (2303, 8193), (2731, 6909)]