21185904

素因数分解:

$2^4\times 3^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:278

約数の個数: 80

約数和(自身を含む): 57297920

約数和(自身を除く): 36112016

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 37, 48, 74, 79, 111, 148, 151, 158, 222, 237, 296, 302, 316, 444, 453, 474, 592, 604, 632, 888, 906, 948, 1208, 1264, 1776, 1812, 1896, 2416, 2923, 3624, 3792, 5587, 5846, 7248, 8769, 11174, 11692, 11929, 16761, 17538, 22348, 23384, 23858, 33522, 35076, 35787, 44696, 46768, 47716, 67044, 70152, 71574, 89392, 95432, 134088, 140304, 143148, 190864, 268176, 286296, 441373, 572592, 882746, 1324119, 1765492, 2648238, 3530984, 5296476, 7061968, 10592952, 21185904]

約数ペア:

[(1, 21185904), (2, 10592952), (3, 7061968), (4, 5296476), (6, 3530984), (8, 2648238), (12, 1765492), (16, 1324119), (24, 882746), (37, 572592), (48, 441373), (74, 286296), (79, 268176), (111, 190864), (148, 143148), (151, 140304), (158, 134088), (222, 95432), (237, 89392), (296, 71574), (302, 70152), (316, 67044), (444, 47716), (453, 46768), (474, 44696), (592, 35787), (604, 35076), (632, 33522), (888, 23858), (906, 23384), (948, 22348), (1208, 17538), (1264, 16761), (1776, 11929), (1812, 11692), (1896, 11174), (2416, 8769), (2923, 7248), (3624, 5846), (3792, 5587)]