171940405

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{19889}}^1$

素因数の和:19933

約数の個数: 32

約数和(自身を含む): 267321600

約数和(自身を除く): 95381195

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 8645, 19889, 99445, 139223, 258557, 377891, 696115, 1292785, 1809899, 1889455, 2645237, 4912583, 9049495, 13226185, 24562915, 34388081, 171940405]

約数ペア:

[(1, 171940405), (5, 34388081), (7, 24562915), (13, 13226185), (19, 9049495), (35, 4912583), (65, 2645237), (91, 1889455), (95, 1809899), (133, 1292785), (247, 696115), (455, 377891), (665, 258557), (1235, 139223), (1729, 99445), (8645, 19889)]