38913940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 91770840

約数和(自身を除く): 52856900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 169, 260, 290, 338, 377, 397, 580, 676, 754, 794, 845, 1508, 1588, 1690, 1885, 1985, 3380, 3770, 3970, 4901, 5161, 7540, 7940, 9802, 10322, 11513, 19604, 20644, 23026, 24505, 25805, 46052, 49010, 51610, 57565, 67093, 98020, 103220, 115130, 134186, 149669, 230260, 268372, 299338, 335465, 598676, 670930, 748345, 1341860, 1496690, 1945697, 2993380, 3891394, 7782788, 9728485, 19456970, 38913940]

約数ペア:

[(1, 38913940), (2, 19456970), (4, 9728485), (5, 7782788), (10, 3891394), (13, 2993380), (20, 1945697), (26, 1496690), (29, 1341860), (52, 748345), (58, 670930), (65, 598676), (116, 335465), (130, 299338), (145, 268372), (169, 230260), (260, 149669), (290, 134186), (338, 115130), (377, 103220), (397, 98020), (580, 67093), (676, 57565), (754, 51610), (794, 49010), (845, 46052), (1508, 25805), (1588, 24505), (1690, 23026), (1885, 20644), (1985, 19604), (3380, 11513), (3770, 10322), (3970, 9802), (4901, 7940), (5161, 7540)]