20936880

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{359}}^1$

素因数の和:390

約数の個数: 140

約数和(自身を含む): 73187280

約数和(自身を除く): 52250400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 359, 360, 405, 432, 486, 540, 648, 718, 720, 729, 810, 972, 1077, 1080, 1215, 1296, 1436, 1458, 1620, 1795, 1944, 2154, 2160, 2430, 2872, 2916, 3231, 3240, 3590, 3645, 3888, 4308, 4860, 5385, 5744, 5832, 6462, 6480, 7180, 7290, 8616, 9693, 9720, 10770, 11664, 12924, 14360, 14580, 16155, 17232, 19386, 19440, 21540, 25848, 28720, 29079, 29160, 32310, 38772, 43080, 48465, 51696, 58158, 58320, 64620, 77544, 86160, 87237, 96930, 116316, 129240, 145395, 155088, 174474, 193860, 232632, 258480, 261711, 290790, 348948, 387720, 436185, 465264, 523422, 581580, 697896, 775440, 872370, 1046844, 1163160, 1308555, 1395792, 1744740, 2093688, 2326320, 2617110, 3489480, 4187376, 5234220, 6978960, 10468440, 20936880]

約数ペア:

[(1, 20936880), (2, 10468440), (3, 6978960), (4, 5234220), (5, 4187376), (6, 3489480), (8, 2617110), (9, 2326320), (10, 2093688), (12, 1744740), (15, 1395792), (16, 1308555), (18, 1163160), (20, 1046844), (24, 872370), (27, 775440), (30, 697896), (36, 581580), (40, 523422), (45, 465264), (48, 436185), (54, 387720), (60, 348948), (72, 290790), (80, 261711), (81, 258480), (90, 232632), (108, 193860), (120, 174474), (135, 155088), (144, 145395), (162, 129240), (180, 116316), (216, 96930), (240, 87237), (243, 86160), (270, 77544), (324, 64620), (359, 58320), (360, 58158), (405, 51696), (432, 48465), (486, 43080), (540, 38772), (648, 32310), (718, 29160), (720, 29079), (729, 28720), (810, 25848), (972, 21540), (1077, 19440), (1080, 19386), (1215, 17232), (1296, 16155), (1436, 14580), (1458, 14360), (1620, 12924), (1795, 11664), (1944, 10770), (2154, 9720), (2160, 9693), (2430, 8616), (2872, 7290), (2916, 7180), (3231, 6480), (3240, 6462), (3590, 5832), (3645, 5744), (3888, 5385), (4308, 4860)]