21996515

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{743}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 27426816

約数和(自身を除く): 5430301

約数列:

[1, 5, 31, 155, 191, 743, 955, 3715, 5921, 23033, 29605, 115165, 141913, 709565, 4399303, 21996515]

約数ペア:

[(1, 21996515), (5, 4399303), (31, 709565), (155, 141913), (191, 115165), (743, 29605), (955, 23033), (3715, 5921)]