20916720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:188

約数の個数: 240

約数和(自身を含む): 81244800

約数和(自身を除く): 60328080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 19, 20, 22, 24, 30, 33, 36, 38, 40, 44, 45, 48, 55, 57, 60, 66, 72, 76, 80, 88, 90, 95, 99, 110, 114, 120, 132, 139, 144, 152, 165, 171, 176, 180, 190, 198, 209, 220, 228, 240, 264, 278, 285, 304, 330, 342, 360, 380, 396, 417, 418, 440, 456, 495, 528, 556, 570, 627, 660, 684, 695, 720, 760, 792, 834, 836, 855, 880, 912, 990, 1045, 1112, 1140, 1251, 1254, 1320, 1368, 1390, 1520, 1529, 1584, 1668, 1672, 1710, 1881, 1980, 2085, 2090, 2224, 2280, 2502, 2508, 2640, 2641, 2736, 2780, 3058, 3135, 3336, 3344, 3420, 3762, 3960, 4170, 4180, 4560, 4587, 5004, 5016, 5282, 5560, 6116, 6255, 6270, 6672, 6840, 7524, 7645, 7920, 7923, 8340, 8360, 9174, 9405, 10008, 10032, 10564, 11120, 12232, 12510, 12540, 13205, 13680, 13761, 15048, 15290, 15846, 16680, 16720, 18348, 18810, 20016, 21128, 22935, 23769, 24464, 25020, 25080, 26410, 27522, 29051, 30096, 30580, 31692, 33360, 36696, 37620, 39615, 42256, 45870, 47538, 50040, 50160, 52820, 55044, 58102, 61160, 63384, 68805, 73392, 75240, 79230, 87153, 91740, 95076, 100080, 105640, 110088, 116204, 118845, 122320, 126768, 137610, 145255, 150480, 158460, 174306, 183480, 190152, 211280, 220176, 232408, 237690, 261459, 275220, 290510, 316920, 348612, 366960, 380304, 435765, 464816, 475380, 522918, 550440, 581020, 633840, 697224, 871530, 950760, 1045836, 1100880, 1162040, 1307295, 1394448, 1743060, 1901520, 2091672, 2324080, 2614590, 3486120, 4183344, 5229180, 6972240, 10458360, 20916720]

約数ペア:

[(1, 20916720), (2, 10458360), (3, 6972240), (4, 5229180), (5, 4183344), (6, 3486120), (8, 2614590), (9, 2324080), (10, 2091672), (11, 1901520), (12, 1743060), (15, 1394448), (16, 1307295), (18, 1162040), (19, 1100880), (20, 1045836), (22, 950760), (24, 871530), (30, 697224), (33, 633840), (36, 581020), (38, 550440), (40, 522918), (44, 475380), (45, 464816), (48, 435765), (55, 380304), (57, 366960), (60, 348612), (66, 316920), (72, 290510), (76, 275220), (80, 261459), (88, 237690), (90, 232408), (95, 220176), (99, 211280), (110, 190152), (114, 183480), (120, 174306), (132, 158460), (139, 150480), (144, 145255), (152, 137610), (165, 126768), (171, 122320), (176, 118845), (180, 116204), (190, 110088), (198, 105640), (209, 100080), (220, 95076), (228, 91740), (240, 87153), (264, 79230), (278, 75240), (285, 73392), (304, 68805), (330, 63384), (342, 61160), (360, 58102), (380, 55044), (396, 52820), (417, 50160), (418, 50040), (440, 47538), (456, 45870), (495, 42256), (528, 39615), (556, 37620), (570, 36696), (627, 33360), (660, 31692), (684, 30580), (695, 30096), (720, 29051), (760, 27522), (792, 26410), (834, 25080), (836, 25020), (855, 24464), (880, 23769), (912, 22935), (990, 21128), (1045, 20016), (1112, 18810), (1140, 18348), (1251, 16720), (1254, 16680), (1320, 15846), (1368, 15290), (1390, 15048), (1520, 13761), (1529, 13680), (1584, 13205), (1668, 12540), (1672, 12510), (1710, 12232), (1881, 11120), (1980, 10564), (2085, 10032), (2090, 10008), (2224, 9405), (2280, 9174), (2502, 8360), (2508, 8340), (2640, 7923), (2641, 7920), (2736, 7645), (2780, 7524), (3058, 6840), (3135, 6672), (3336, 6270), (3344, 6255), (3420, 6116), (3762, 5560), (3960, 5282), (4170, 5016), (4180, 5004), (4560, 4587)]