20749821

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1597}}^1$

素因数の和:1732

約数の個数: 16

約数和(自身を含む): 28533888

約数和(自身を除く): 7784067

約数列:

[1, 3, 61, 71, 183, 213, 1597, 4331, 4791, 12993, 97417, 113387, 292251, 340161, 6916607, 20749821]

約数ペア:

[(1, 20749821), (3, 6916607), (61, 340161), (71, 292251), (183, 113387), (213, 97417), (1597, 12993), (4331, 4791)]