21372087

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{4289}}^1$

素因数の和:4454

約数の個数: 16

約数和(自身を含む): 31299840

約数和(自身を除く): 9927753

約数列:

[1, 3, 11, 33, 151, 453, 1661, 4289, 4983, 12867, 47179, 141537, 647639, 1942917, 7124029, 21372087]

約数ペア:

[(1, 21372087), (3, 7124029), (11, 1942917), (33, 647639), (151, 141537), (453, 47179), (1661, 12867), (4289, 4983)]