21583985

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{1031}}^1$

素因数の和:1168

約数の個数: 16

約数和(自身を含む): 26749440

約数和(自身を除く): 5165455

約数列:

[1, 5, 53, 79, 265, 395, 1031, 4187, 5155, 20935, 54643, 81449, 273215, 407245, 4316797, 21583985]

約数ペア:

[(1, 21583985), (5, 4316797), (53, 407245), (79, 273215), (265, 81449), (395, 54643), (1031, 20935), (4187, 5155)]