21286041

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1627}}^1$

素因数の和:1733

約数の個数: 24

約数和(自身を含む): 33406560

約数和(自身を除く): 12120519

約数列:

[1, 3, 7, 21, 49, 89, 147, 267, 623, 1627, 1869, 4361, 4881, 11389, 13083, 34167, 79723, 144803, 239169, 434409, 1013621, 3040863, 7095347, 21286041]

約数ペア:

[(1, 21286041), (3, 7095347), (7, 3040863), (21, 1013621), (49, 434409), (89, 239169), (147, 144803), (267, 79723), (623, 34167), (1627, 13083), (1869, 11389), (4361, 4881)]