20491620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:545

約数の個数: 96

約数和(自身を含む): 61931520

約数和(自身を除く): 41439900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 31, 46, 60, 62, 69, 92, 93, 115, 124, 138, 155, 186, 230, 276, 310, 345, 372, 460, 465, 479, 620, 690, 713, 930, 958, 1380, 1426, 1437, 1860, 1916, 2139, 2395, 2852, 2874, 3565, 4278, 4790, 5748, 7130, 7185, 8556, 9580, 10695, 11017, 14260, 14370, 14849, 21390, 22034, 28740, 29698, 33051, 42780, 44068, 44547, 55085, 59396, 66102, 74245, 89094, 110170, 132204, 148490, 165255, 178188, 220340, 222735, 296980, 330510, 341527, 445470, 661020, 683054, 890940, 1024581, 1366108, 1707635, 2049162, 3415270, 4098324, 5122905, 6830540, 10245810, 20491620]

約数ペア:

[(1, 20491620), (2, 10245810), (3, 6830540), (4, 5122905), (5, 4098324), (6, 3415270), (10, 2049162), (12, 1707635), (15, 1366108), (20, 1024581), (23, 890940), (30, 683054), (31, 661020), (46, 445470), (60, 341527), (62, 330510), (69, 296980), (92, 222735), (93, 220340), (115, 178188), (124, 165255), (138, 148490), (155, 132204), (186, 110170), (230, 89094), (276, 74245), (310, 66102), (345, 59396), (372, 55085), (460, 44547), (465, 44068), (479, 42780), (620, 33051), (690, 29698), (713, 28740), (930, 22034), (958, 21390), (1380, 14849), (1426, 14370), (1437, 14260), (1860, 11017), (1916, 10695), (2139, 9580), (2395, 8556), (2852, 7185), (2874, 7130), (3565, 5748), (4278, 4790)]