20459991

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{743}}^1$

素因数の和:950

約数の個数: 16

約数和(自身を含む): 27926784

約数和(自身を除く): 7466793

約数列:

[1, 3, 67, 137, 201, 411, 743, 2229, 9179, 27537, 49781, 101791, 149343, 305373, 6819997, 20459991]

約数ペア:

[(1, 20459991), (3, 6819997), (67, 305373), (137, 149343), (201, 101791), (411, 49781), (743, 27537), (2229, 9179)]