19858765

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{907}}^1$

素因数の和:1092

約数の個数: 16

約数和(自身を含む): 24842880

約数和(自身を除く): 4984115

約数列:

[1, 5, 29, 145, 151, 755, 907, 4379, 4535, 21895, 26303, 131515, 136957, 684785, 3971753, 19858765]

約数ペア:

[(1, 19858765), (5, 3971753), (29, 684785), (145, 136957), (151, 131515), (755, 26303), (907, 21895), (4379, 4535)]