21493115

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2371}}^1$

素因数の和:2427

約数の個数: 24

約数和(自身を含む): 30826512

約数和(自身を除く): 9333397

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 2371, 9065, 11855, 16597, 82985, 87727, 116179, 438635, 580895, 614089, 3070445, 4298623, 21493115]

約数ペア:

[(1, 21493115), (5, 4298623), (7, 3070445), (35, 614089), (37, 580895), (49, 438635), (185, 116179), (245, 87727), (259, 82985), (1295, 16597), (1813, 11855), (2371, 9065)]