21972923

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{47}}^2$

素因数の和:144

約数の個数: 24

約数和(自身を含む): 27084000

約数和(自身を除く): 5111077

約数列:

[1, 7, 29, 47, 49, 203, 329, 343, 1363, 1421, 2209, 2303, 9541, 9947, 15463, 16121, 64061, 66787, 108241, 448427, 467509, 757687, 3138989, 21972923]

約数ペア:

[(1, 21972923), (7, 3138989), (29, 757687), (47, 467509), (49, 448427), (203, 108241), (329, 66787), (343, 64061), (1363, 16121), (1421, 15463), (2209, 9947), (2303, 9541)]