19929455

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43801}}^1$

素因数の和:43826

約数の個数: 16

約数和(自身を含む): 29434944

約数和(自身を除く): 9505489

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 43801, 219005, 306607, 569413, 1533035, 2847065, 3985891, 19929455]

約数ペア:

[(1, 19929455), (5, 3985891), (7, 2847065), (13, 1533035), (35, 569413), (65, 306607), (91, 219005), (455, 43801)]