20277985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1087}}^1$

素因数の和:1153

約数の個数: 32

約数和(自身を含む): 30707712

約数和(自身を除く): 10429727

約数列:

[1, 5, 7, 13, 35, 41, 65, 91, 205, 287, 455, 533, 1087, 1435, 2665, 3731, 5435, 7609, 14131, 18655, 38045, 44567, 70655, 98917, 222835, 311969, 494585, 579371, 1559845, 2896855, 4055597, 20277985]

約数ペア:

[(1, 20277985), (5, 4055597), (7, 2896855), (13, 1559845), (35, 579371), (41, 494585), (65, 311969), (91, 222835), (205, 98917), (287, 70655), (455, 44567), (533, 38045), (1087, 18655), (1435, 14131), (2665, 7609), (3731, 5435)]