21700263

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{4003}}^1$

素因数の和:4158

約数の個数: 16

約数和(自身を含む): 31391360

約数和(自身を除く): 9691097

約数列:

[1, 3, 13, 39, 139, 417, 1807, 4003, 5421, 12009, 52039, 156117, 556417, 1669251, 7233421, 21700263]

約数ペア:

[(1, 21700263), (3, 7233421), (13, 1669251), (39, 556417), (139, 156117), (417, 52039), (1807, 12009), (4003, 5421)]