21489247

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^3\times {\mathrm{241}}^1$

素因数の和:311

約数の個数: 16

約数和(自身を含む): 24529120

約数和(自身を除く): 3039873

約数列:

[1, 13, 19, 241, 247, 361, 3133, 4579, 4693, 6859, 59527, 87001, 89167, 1131013, 1653019, 21489247]

約数ペア:

[(1, 21489247), (13, 1653019), (19, 1131013), (241, 89167), (247, 87001), (361, 59527), (3133, 6859), (4579, 4693)]