20825235

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:409

約数の個数: 64

約数和(自身を含む): 40780800

約数和(自身を除く): 19955565

約数列:

[1, 3, 5, 9, 15, 19, 23, 27, 45, 57, 69, 95, 115, 135, 171, 207, 285, 345, 353, 437, 513, 621, 855, 1035, 1059, 1311, 1765, 2185, 2565, 3105, 3177, 3933, 5295, 6555, 6707, 8119, 9531, 11799, 15885, 19665, 20121, 24357, 33535, 40595, 47655, 58995, 60363, 73071, 100605, 121785, 154261, 181089, 219213, 301815, 365355, 462783, 771305, 905445, 1096065, 1388349, 2313915, 4165047, 6941745, 20825235]

約数ペア:

[(1, 20825235), (3, 6941745), (5, 4165047), (9, 2313915), (15, 1388349), (19, 1096065), (23, 905445), (27, 771305), (45, 462783), (57, 365355), (69, 301815), (95, 219213), (115, 181089), (135, 154261), (171, 121785), (207, 100605), (285, 73071), (345, 60363), (353, 58995), (437, 47655), (513, 40595), (621, 33535), (855, 24357), (1035, 20121), (1059, 19665), (1311, 15885), (1765, 11799), (2185, 9531), (2565, 8119), (3105, 6707), (3177, 6555), (3933, 5295)]