21713825

素因数分解:

$5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{977}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 31045632

約数和(自身を除く): 9331807

約数列:

[1, 5, 7, 25, 35, 127, 175, 635, 889, 977, 3175, 4445, 4885, 6839, 22225, 24425, 34195, 124079, 170975, 620395, 868553, 3101975, 4342765, 21713825]

約数ペア:

[(1, 21713825), (5, 4342765), (7, 3101975), (25, 868553), (35, 620395), (127, 170975), (175, 124079), (635, 34195), (889, 24425), (977, 22225), (3175, 6839), (4445, 4885)]