1229256721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{757}}^1\times {\mathrm{21089}}^1$

素因数の和:21864

約数の個数: 16

約数和(自身を含む): 1534677120

約数和(自身を除く): 305420399

約数列:

[1, 7, 11, 77, 757, 5299, 8327, 21089, 58289, 147623, 231979, 1623853, 15964373, 111750611, 175608103, 1229256721]

約数ペア:

[(1, 1229256721), (7, 175608103), (11, 111750611), (77, 15964373), (757, 1623853), (5299, 231979), (8327, 147623), (21089, 58289)]