21919425

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{163}}^2$

素因数の和:350

約数の個数: 36

約数和(自身を含む): 39778704

約数和(自身を除く): 17859279

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 163, 165, 275, 489, 815, 825, 1793, 2445, 4075, 5379, 8965, 12225, 26569, 26895, 44825, 79707, 132845, 134475, 292259, 398535, 664225, 876777, 1461295, 1992675, 4383885, 7306475, 21919425]

約数ペア:

[(1, 21919425), (3, 7306475), (5, 4383885), (11, 1992675), (15, 1461295), (25, 876777), (33, 664225), (55, 398535), (75, 292259), (163, 134475), (165, 132845), (275, 79707), (489, 44825), (815, 26895), (825, 26569), (1793, 12225), (2445, 8965), (4075, 5379)]