21513280

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 112

約数和(自身を含む): 55595520

約数和(自身を除く): 34082240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 37, 40, 46, 64, 74, 79, 80, 92, 115, 148, 158, 160, 184, 185, 230, 296, 316, 320, 368, 370, 395, 460, 592, 632, 736, 740, 790, 851, 920, 1184, 1264, 1472, 1480, 1580, 1702, 1817, 1840, 2368, 2528, 2923, 2960, 3160, 3404, 3634, 3680, 4255, 5056, 5846, 5920, 6320, 6808, 7268, 7360, 8510, 9085, 11692, 11840, 12640, 13616, 14536, 14615, 17020, 18170, 23384, 25280, 27232, 29072, 29230, 34040, 36340, 46768, 54464, 58144, 58460, 67229, 68080, 72680, 93536, 116288, 116920, 134458, 136160, 145360, 187072, 233840, 268916, 272320, 290720, 336145, 467680, 537832, 581440, 672290, 935360, 1075664, 1344580, 2151328, 2689160, 4302656, 5378320, 10756640, 21513280]

約数ペア:

[(1, 21513280), (2, 10756640), (4, 5378320), (5, 4302656), (8, 2689160), (10, 2151328), (16, 1344580), (20, 1075664), (23, 935360), (32, 672290), (37, 581440), (40, 537832), (46, 467680), (64, 336145), (74, 290720), (79, 272320), (80, 268916), (92, 233840), (115, 187072), (148, 145360), (158, 136160), (160, 134458), (184, 116920), (185, 116288), (230, 93536), (296, 72680), (316, 68080), (320, 67229), (368, 58460), (370, 58144), (395, 54464), (460, 46768), (592, 36340), (632, 34040), (736, 29230), (740, 29072), (790, 27232), (851, 25280), (920, 23384), (1184, 18170), (1264, 17020), (1472, 14615), (1480, 14536), (1580, 13616), (1702, 12640), (1817, 11840), (1840, 11692), (2368, 9085), (2528, 8510), (2923, 7360), (2960, 7268), (3160, 6808), (3404, 6320), (3634, 5920), (3680, 5846), (4255, 5056)]