21541997517

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{5640743}}^1$

素因数の和:5640832

約数の個数: 16

約数和(自身を含む): 30685647360

約数和(自身を除く): 9143649843

約数列:

[1, 3, 19, 57, 67, 201, 1273, 3819, 5640743, 16922229, 107174117, 321522351, 377929781, 1133789343, 7180665839, 21541997517]

約数ペア:

[(1, 21541997517), (3, 7180665839), (19, 1133789343), (57, 377929781), (67, 321522351), (201, 107174117), (1273, 16922229), (3819, 5640743)]