21402465

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 40963392

約数和(自身を除く): 19560927

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 49, 105, 111, 147, 185, 245, 259, 555, 735, 777, 787, 1295, 1813, 2361, 3885, 3935, 5439, 5509, 9065, 11805, 16527, 27195, 27545, 29119, 38563, 82635, 87357, 115689, 145595, 192815, 203833, 436785, 578445, 611499, 1019165, 1426831, 3057495, 4280493, 7134155, 21402465]

約数ペア:

[(1, 21402465), (3, 7134155), (5, 4280493), (7, 3057495), (15, 1426831), (21, 1019165), (35, 611499), (37, 578445), (49, 436785), (105, 203833), (111, 192815), (147, 145595), (185, 115689), (245, 87357), (259, 82635), (555, 38563), (735, 29119), (777, 27545), (787, 27195), (1295, 16527), (1813, 11805), (2361, 9065), (3885, 5509), (3935, 5439)]