28926891

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 21392469

約数列:

[1, 3, 7, 9, 21, 29, 63, 71, 87, 203, 213, 223, 261, 497, 609, 639, 669, 1491, 1561, 1827, 2007, 2059, 4473, 4683, 6177, 6467, 14049, 14413, 15833, 18531, 19401, 43239, 45269, 47499, 58203, 110831, 129717, 135807, 142497, 332493, 407421, 459157, 997479, 1377471, 3214099, 4132413, 9642297, 28926891]

約数ペア:

[(1, 28926891), (3, 9642297), (7, 4132413), (9, 3214099), (21, 1377471), (29, 997479), (63, 459157), (71, 407421), (87, 332493), (203, 142497), (213, 135807), (223, 129717), (261, 110831), (497, 58203), (609, 47499), (639, 45269), (669, 43239), (1491, 19401), (1561, 18531), (1827, 15833), (2007, 14413), (2059, 14049), (4473, 6467), (4683, 6177)]