21226205

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4241}}^1$

素因数の和:4277

約数の個数: 32

約数和(自身を含む): 34207488

約数和(自身を除く): 12981283

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4241, 5005, 21205, 29687, 46651, 55133, 148435, 233255, 275665, 326557, 385931, 606463, 1632785, 1929655, 3032315, 4245241, 21226205]

約数ペア:

[(1, 21226205), (5, 4245241), (7, 3032315), (11, 1929655), (13, 1632785), (35, 606463), (55, 385931), (65, 326557), (77, 275665), (91, 233255), (143, 148435), (385, 55133), (455, 46651), (715, 29687), (1001, 21205), (4241, 5005)]