28390864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1531}}^1$

素因数の和:1619

約数の個数: 40

約数和(自身を含む): 58890080

約数和(自身を除く): 30499216

約数列:

[1, 2, 4, 8, 16, 19, 38, 61, 76, 122, 152, 244, 304, 488, 976, 1159, 1531, 2318, 3062, 4636, 6124, 9272, 12248, 18544, 24496, 29089, 58178, 93391, 116356, 186782, 232712, 373564, 465424, 747128, 1494256, 1774429, 3548858, 7097716, 14195432, 28390864]

約数ペア:

[(1, 28390864), (2, 14195432), (4, 7097716), (8, 3548858), (16, 1774429), (19, 1494256), (38, 747128), (61, 465424), (76, 373564), (122, 232712), (152, 186782), (244, 116356), (304, 93391), (488, 58178), (976, 29089), (1159, 24496), (1531, 18544), (2318, 12248), (3062, 9272), (4636, 6124)]