221471705

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{757}}^1$

素因数の和:1425

約数の個数: 32

約数和(自身を含む): 328038144

約数和(自身を除く): 106566439

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 643, 757, 3215, 3785, 4501, 5299, 8359, 9841, 22505, 26495, 41795, 49205, 58513, 68887, 292565, 344435, 486751, 2433755, 3407257, 6327763, 17036285, 31638815, 44294341, 221471705]

約数ペア:

[(1, 221471705), (5, 44294341), (7, 31638815), (13, 17036285), (35, 6327763), (65, 3407257), (91, 2433755), (455, 486751), (643, 344435), (757, 292565), (3215, 68887), (3785, 58513), (4501, 49205), (5299, 41795), (8359, 26495), (9841, 22505)]