20388625359

素因数分解:

$3^1\times {\mathrm{151}}^1\times {\mathrm{167}}^1\times {\mathrm{181}}^1\times {\mathrm{1489}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 27699409920

約数和(自身を除く): 7310784561

約数列:

[1, 3, 151, 167, 181, 453, 501, 543, 1489, 4467, 25217, 27331, 30227, 75651, 81993, 90681, 224839, 248663, 269509, 674517, 745989, 808527, 4564277, 13692831, 37548113, 40695859, 45008003, 112644339, 122087577, 135024009, 6796208453, 20388625359]

約数ペア:

[(1, 20388625359), (3, 6796208453), (151, 135024009), (167, 122087577), (181, 112644339), (453, 45008003), (501, 40695859), (543, 37548113), (1489, 13692831), (4467, 4564277), (25217, 808527), (27331, 745989), (30227, 674517), (75651, 269509), (81993, 248663), (90681, 224839)]