20648649

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7393}}^1$

素因数の和:7429

約数の個数: 24

約数和(自身を含む): 33716640

約数和(自身を除く): 13067991

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7393, 22179, 51751, 140467, 155253, 362257, 421401, 983269, 1086771, 2949807, 6882883, 20648649]

約数ペア:

[(1, 20648649), (3, 6882883), (7, 2949807), (19, 1086771), (21, 983269), (49, 421401), (57, 362257), (133, 155253), (147, 140467), (399, 51751), (931, 22179), (2793, 7393)]