20805993

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2251}}^1$

素因数の和:2349

約数の個数: 24

約数和(自身を含む): 32789120

約数和(自身を除く): 11983127

約数列:

[1, 3, 9, 13, 39, 79, 117, 237, 711, 1027, 2251, 3081, 6753, 9243, 20259, 29263, 87789, 177829, 263367, 533487, 1600461, 2311777, 6935331, 20805993]

約数ペア:

[(1, 20805993), (3, 6935331), (9, 2311777), (13, 1600461), (39, 533487), (79, 263367), (117, 177829), (237, 87789), (711, 29263), (1027, 20259), (2251, 9243), (3081, 6753)]