20198515

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{863}}^1$

素因数の和:1050

約数の個数: 16

約数和(自身を含む): 25214976

約数和(自身を除く): 5016461

約数列:

[1, 5, 31, 151, 155, 755, 863, 4315, 4681, 23405, 26753, 130313, 133765, 651565, 4039703, 20198515]

約数ペア:

[(1, 20198515), (5, 4039703), (31, 651565), (151, 133765), (155, 130313), (755, 26753), (863, 23405), (4315, 4681)]