21500465

素因数分解:

$5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{691}}^1$

素因数の和:837

約数の個数: 24

約数和(自身を含む): 30292992

約数和(自身を除く): 8792527

約数列:

[1, 5, 7, 35, 49, 127, 245, 635, 691, 889, 3455, 4445, 4837, 6223, 24185, 31115, 33859, 87757, 169295, 438785, 614299, 3071495, 4300093, 21500465]

約数ペア:

[(1, 21500465), (5, 4300093), (7, 3071495), (35, 614299), (49, 438785), (127, 169295), (245, 87757), (635, 33859), (691, 31115), (889, 24185), (3455, 6223), (4445, 4837)]