20622777

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2647}}^1$

素因数の和:2717

約数の個数: 24

約数和(自身を含む): 32602176

約数和(自身を除く): 11979399

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2597, 2647, 7791, 7941, 18529, 55587, 129703, 140291, 389109, 420873, 982037, 2946111, 6874259, 20622777]

約数ペア:

[(1, 20622777), (3, 6874259), (7, 2946111), (21, 982037), (49, 420873), (53, 389109), (147, 140291), (159, 129703), (371, 55587), (1113, 18529), (2597, 7941), (2647, 7791)]