20928225

素因数分解:

$3^1\times 5^2\times {\mathrm{263}}^1\times {\mathrm{1061}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 34765632

約数和(自身を除く): 13837407

約数列:

[1, 3, 5, 15, 25, 75, 263, 789, 1061, 1315, 3183, 3945, 5305, 6575, 15915, 19725, 26525, 79575, 279043, 837129, 1395215, 4185645, 6976075, 20928225]

約数ペア:

[(1, 20928225), (3, 6976075), (5, 4185645), (15, 1395215), (25, 837129), (75, 279043), (263, 79575), (789, 26525), (1061, 19725), (1315, 15915), (3183, 6575), (3945, 5305)]