21187860840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{209449}}^1$

素因数の和:209747

約数の個数: 96

約数和(自身を含む): 69105933000

約数和(自身を除く): 47918072160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 281, 360, 562, 843, 1124, 1405, 1686, 2248, 2529, 2810, 3372, 4215, 5058, 5620, 6744, 8430, 10116, 11240, 12645, 16860, 20232, 25290, 33720, 50580, 101160, 209449, 418898, 628347, 837796, 1047245, 1256694, 1675592, 1885041, 2094490, 2513388, 3141735, 3770082, 4188980, 5026776, 6283470, 7540164, 8377960, 9425205, 12566940, 15080328, 18850410, 25133880, 37700820, 58855169, 75401640, 117710338, 176565507, 235420676, 294275845, 353131014, 470841352, 529696521, 588551690, 706262028, 882827535, 1059393042, 1177103380, 1412524056, 1765655070, 2118786084, 2354206760, 2648482605, 3531310140, 4237572168, 5296965210, 7062620280, 10593930420, 21187860840]

約数ペア:

[(1, 21187860840), (2, 10593930420), (3, 7062620280), (4, 5296965210), (5, 4237572168), (6, 3531310140), (8, 2648482605), (9, 2354206760), (10, 2118786084), (12, 1765655070), (15, 1412524056), (18, 1177103380), (20, 1059393042), (24, 882827535), (30, 706262028), (36, 588551690), (40, 529696521), (45, 470841352), (60, 353131014), (72, 294275845), (90, 235420676), (120, 176565507), (180, 117710338), (281, 75401640), (360, 58855169), (562, 37700820), (843, 25133880), (1124, 18850410), (1405, 15080328), (1686, 12566940), (2248, 9425205), (2529, 8377960), (2810, 7540164), (3372, 6283470), (4215, 5026776), (5058, 4188980), (5620, 3770082), (6744, 3141735), (8430, 2513388), (10116, 2094490), (11240, 1885041), (12645, 1675592), (16860, 1256694), (20232, 1047245), (25290, 837796), (33720, 628347), (50580, 418898), (101160, 209449)]