20986440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^2$

素因数の和:183

約数の個数: 96

約数和(自身を含む): 65370240

約数和(自身を除く): 44383800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 61, 94, 120, 122, 141, 183, 188, 235, 244, 282, 305, 366, 376, 470, 488, 564, 610, 705, 732, 915, 940, 1128, 1220, 1410, 1464, 1830, 1880, 2440, 2820, 2867, 3660, 3721, 5640, 5734, 7320, 7442, 8601, 11163, 11468, 14335, 14884, 17202, 18605, 22326, 22936, 28670, 29768, 34404, 37210, 43005, 44652, 55815, 57340, 68808, 74420, 86010, 89304, 111630, 114680, 148840, 172020, 174887, 223260, 344040, 349774, 446520, 524661, 699548, 874435, 1049322, 1399096, 1748870, 2098644, 2623305, 3497740, 4197288, 5246610, 6995480, 10493220, 20986440]

約数ペア:

[(1, 20986440), (2, 10493220), (3, 6995480), (4, 5246610), (5, 4197288), (6, 3497740), (8, 2623305), (10, 2098644), (12, 1748870), (15, 1399096), (20, 1049322), (24, 874435), (30, 699548), (40, 524661), (47, 446520), (60, 349774), (61, 344040), (94, 223260), (120, 174887), (122, 172020), (141, 148840), (183, 114680), (188, 111630), (235, 89304), (244, 86010), (282, 74420), (305, 68808), (366, 57340), (376, 55815), (470, 44652), (488, 43005), (564, 37210), (610, 34404), (705, 29768), (732, 28670), (915, 22936), (940, 22326), (1128, 18605), (1220, 17202), (1410, 14884), (1464, 14335), (1830, 11468), (1880, 11163), (2440, 8601), (2820, 7442), (2867, 7320), (3660, 5734), (3721, 5640)]