21060664

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{1091}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 41932800

約数和(自身を除く): 20872136

約数列:

[1, 2, 4, 8, 19, 38, 76, 127, 152, 254, 508, 1016, 1091, 2182, 2413, 4364, 4826, 8728, 9652, 19304, 20729, 41458, 82916, 138557, 165832, 277114, 554228, 1108456, 2632583, 5265166, 10530332, 21060664]

約数ペア:

[(1, 21060664), (2, 10530332), (4, 5265166), (8, 2632583), (19, 1108456), (38, 554228), (76, 277114), (127, 165832), (152, 138557), (254, 82916), (508, 41458), (1016, 20729), (1091, 19304), (2182, 9652), (2413, 8728), (4364, 4826)]