19818455

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{4409}}^1$

素因数の和:4474

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 5583145

約数列:

[1, 5, 29, 31, 145, 155, 899, 4409, 4495, 22045, 127861, 136679, 639305, 683395, 3963691, 19818455]

約数ペア:

[(1, 19818455), (5, 3963691), (29, 683395), (31, 639305), (145, 136679), (155, 127861), (899, 22045), (4409, 4495)]