21306020

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3931}}^1$

素因数の和:4211

約数の個数: 24

約数和(自身を含む): 44919168

約数和(自身を除く): 23613148

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3931, 5420, 7862, 15724, 19655, 39310, 78620, 1065301, 2130602, 4261204, 5326505, 10653010, 21306020]

約数ペア:

[(1, 21306020), (2, 10653010), (4, 5326505), (5, 4261204), (10, 2130602), (20, 1065301), (271, 78620), (542, 39310), (1084, 19655), (1355, 15724), (2710, 7862), (3931, 5420)]