20430960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:207

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 50278800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 71, 80, 88, 109, 110, 120, 132, 142, 165, 176, 213, 218, 220, 240, 264, 284, 327, 330, 355, 426, 436, 440, 528, 545, 568, 654, 660, 710, 781, 852, 872, 880, 1065, 1090, 1136, 1199, 1308, 1320, 1420, 1562, 1635, 1704, 1744, 2130, 2180, 2343, 2398, 2616, 2640, 2840, 3124, 3270, 3408, 3597, 3905, 4260, 4360, 4686, 4796, 5232, 5680, 5995, 6248, 6540, 7194, 7739, 7810, 8520, 8720, 9372, 9592, 11715, 11990, 12496, 13080, 14388, 15478, 15620, 17040, 17985, 18744, 19184, 23217, 23430, 23980, 26160, 28776, 30956, 31240, 35970, 37488, 38695, 46434, 46860, 47960, 57552, 61912, 62480, 71940, 77390, 85129, 92868, 93720, 95920, 116085, 123824, 143880, 154780, 170258, 185736, 187440, 232170, 255387, 287760, 309560, 340516, 371472, 425645, 464340, 510774, 619120, 681032, 851290, 928680, 1021548, 1276935, 1362064, 1702580, 1857360, 2043096, 2553870, 3405160, 4086192, 5107740, 6810320, 10215480, 20430960]

約数ペア:

[(1, 20430960), (2, 10215480), (3, 6810320), (4, 5107740), (5, 4086192), (6, 3405160), (8, 2553870), (10, 2043096), (11, 1857360), (12, 1702580), (15, 1362064), (16, 1276935), (20, 1021548), (22, 928680), (24, 851290), (30, 681032), (33, 619120), (40, 510774), (44, 464340), (48, 425645), (55, 371472), (60, 340516), (66, 309560), (71, 287760), (80, 255387), (88, 232170), (109, 187440), (110, 185736), (120, 170258), (132, 154780), (142, 143880), (165, 123824), (176, 116085), (213, 95920), (218, 93720), (220, 92868), (240, 85129), (264, 77390), (284, 71940), (327, 62480), (330, 61912), (355, 57552), (426, 47960), (436, 46860), (440, 46434), (528, 38695), (545, 37488), (568, 35970), (654, 31240), (660, 30956), (710, 28776), (781, 26160), (852, 23980), (872, 23430), (880, 23217), (1065, 19184), (1090, 18744), (1136, 17985), (1199, 17040), (1308, 15620), (1320, 15478), (1420, 14388), (1562, 13080), (1635, 12496), (1704, 11990), (1744, 11715), (2130, 9592), (2180, 9372), (2343, 8720), (2398, 8520), (2616, 7810), (2640, 7739), (2840, 7194), (3124, 6540), (3270, 6248), (3408, 5995), (3597, 5680), (3905, 5232), (4260, 4796), (4360, 4686)]