20890980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3517}}^1$

素因数の和:3546

約数の個数: 96

約数和(自身を含む): 70922880

約数和(自身を除く): 50031900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 90, 99, 108, 110, 132, 135, 165, 180, 198, 220, 270, 297, 330, 396, 495, 540, 594, 660, 990, 1188, 1485, 1980, 2970, 3517, 5940, 7034, 10551, 14068, 17585, 21102, 31653, 35170, 38687, 42204, 52755, 63306, 70340, 77374, 94959, 105510, 116061, 126612, 154748, 158265, 189918, 193435, 211020, 232122, 316530, 348183, 379836, 386870, 464244, 474795, 580305, 633060, 696366, 773740, 949590, 1044549, 1160610, 1392732, 1740915, 1899180, 2089098, 2321220, 3481830, 4178196, 5222745, 6963660, 10445490, 20890980]

約数ペア:

[(1, 20890980), (2, 10445490), (3, 6963660), (4, 5222745), (5, 4178196), (6, 3481830), (9, 2321220), (10, 2089098), (11, 1899180), (12, 1740915), (15, 1392732), (18, 1160610), (20, 1044549), (22, 949590), (27, 773740), (30, 696366), (33, 633060), (36, 580305), (44, 474795), (45, 464244), (54, 386870), (55, 379836), (60, 348183), (66, 316530), (90, 232122), (99, 211020), (108, 193435), (110, 189918), (132, 158265), (135, 154748), (165, 126612), (180, 116061), (198, 105510), (220, 94959), (270, 77374), (297, 70340), (330, 63306), (396, 52755), (495, 42204), (540, 38687), (594, 35170), (660, 31653), (990, 21102), (1188, 17585), (1485, 14068), (1980, 10551), (2970, 7034), (3517, 5940)]