20000868

素因数分解:

$2^2\times 3^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{421}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 48492864

約数和(自身を除く): 28491996

約数列:

[1, 2, 3, 4, 6, 12, 37, 74, 107, 111, 148, 214, 222, 321, 421, 428, 444, 642, 842, 1263, 1284, 1684, 2526, 3959, 5052, 7918, 11877, 15577, 15836, 23754, 31154, 45047, 46731, 47508, 62308, 90094, 93462, 135141, 180188, 186924, 270282, 540564, 1666739, 3333478, 5000217, 6666956, 10000434, 20000868]

約数ペア:

[(1, 20000868), (2, 10000434), (3, 6666956), (4, 5000217), (6, 3333478), (12, 1666739), (37, 540564), (74, 270282), (107, 186924), (111, 180188), (148, 135141), (214, 93462), (222, 90094), (321, 62308), (421, 47508), (428, 46731), (444, 45047), (642, 31154), (842, 23754), (1263, 15836), (1284, 15577), (1684, 11877), (2526, 7918), (3959, 5052)]