21006075

素因数分解:

$3^1\times 5^2\times {\mathrm{379}}^1\times {\mathrm{739}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 34868800

約数和(自身を除く): 13862725

約数列:

[1, 3, 5, 15, 25, 75, 379, 739, 1137, 1895, 2217, 3695, 5685, 9475, 11085, 18475, 28425, 55425, 280081, 840243, 1400405, 4201215, 7002025, 21006075]

約数ペア:

[(1, 21006075), (3, 7002025), (5, 4201215), (15, 1400405), (25, 840243), (75, 280081), (379, 55425), (739, 28425), (1137, 18475), (1895, 11085), (2217, 9475), (3695, 5685)]