31781520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1193}}^1$

素因数の和:1249

約数の個数: 120

約数和(自身を含む): 109709496

約数和(自身を除く): 77927976

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 45, 48, 60, 72, 74, 80, 90, 111, 120, 144, 148, 180, 185, 222, 240, 296, 333, 360, 370, 444, 555, 592, 666, 720, 740, 888, 1110, 1193, 1332, 1480, 1665, 1776, 2220, 2386, 2664, 2960, 3330, 3579, 4440, 4772, 5328, 5965, 6660, 7158, 8880, 9544, 10737, 11930, 13320, 14316, 17895, 19088, 21474, 23860, 26640, 28632, 35790, 42948, 44141, 47720, 53685, 57264, 71580, 85896, 88282, 95440, 107370, 132423, 143160, 171792, 176564, 214740, 220705, 264846, 286320, 353128, 397269, 429480, 441410, 529692, 662115, 706256, 794538, 858960, 882820, 1059384, 1324230, 1589076, 1765640, 1986345, 2118768, 2648460, 3178152, 3531280, 3972690, 5296920, 6356304, 7945380, 10593840, 15890760, 31781520]

約数ペア:

[(1, 31781520), (2, 15890760), (3, 10593840), (4, 7945380), (5, 6356304), (6, 5296920), (8, 3972690), (9, 3531280), (10, 3178152), (12, 2648460), (15, 2118768), (16, 1986345), (18, 1765640), (20, 1589076), (24, 1324230), (30, 1059384), (36, 882820), (37, 858960), (40, 794538), (45, 706256), (48, 662115), (60, 529692), (72, 441410), (74, 429480), (80, 397269), (90, 353128), (111, 286320), (120, 264846), (144, 220705), (148, 214740), (180, 176564), (185, 171792), (222, 143160), (240, 132423), (296, 107370), (333, 95440), (360, 88282), (370, 85896), (444, 71580), (555, 57264), (592, 53685), (666, 47720), (720, 44141), (740, 42948), (888, 35790), (1110, 28632), (1193, 26640), (1332, 23860), (1480, 21474), (1665, 19088), (1776, 17895), (2220, 14316), (2386, 13320), (2664, 11930), (2960, 10737), (3330, 9544), (3579, 8880), (4440, 7158), (4772, 6660), (5328, 5965)]