20921535369

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2423999}}^1$

素因数の和:2424149

約数の個数: 24

約数和(自身を含む): 34789248000

約数和(自身を除く): 13867712631

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 2877, 8631, 2423999, 7271997, 16967993, 21815991, 50903979, 152711937, 332087863, 996263589, 2324615041, 2988790767, 6973845123, 20921535369]

約数ペア:

[(1, 20921535369), (3, 6973845123), (7, 2988790767), (9, 2324615041), (21, 996263589), (63, 332087863), (137, 152711937), (411, 50903979), (959, 21815991), (1233, 16967993), (2877, 7271997), (8631, 2423999)]