20735280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{929}}^1$

素因数の和:979

約数の個数: 120

約数和(自身を含む): 71959680

約数和(自身を除く): 51224400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 929, 930, 1116, 1240, 1395, 1488, 1858, 1860, 2232, 2480, 2787, 2790, 3716, 3720, 4464, 4645, 5574, 5580, 7432, 7440, 8361, 9290, 11148, 11160, 13935, 14864, 16722, 18580, 22296, 22320, 27870, 28799, 33444, 37160, 41805, 44592, 55740, 57598, 66888, 74320, 83610, 86397, 111480, 115196, 133776, 143995, 167220, 172794, 222960, 230392, 259191, 287990, 334440, 345588, 431985, 460784, 518382, 575980, 668880, 691176, 863970, 1036764, 1151960, 1295955, 1382352, 1727940, 2073528, 2303920, 2591910, 3455880, 4147056, 5183820, 6911760, 10367640, 20735280]

約数ペア:

[(1, 20735280), (2, 10367640), (3, 6911760), (4, 5183820), (5, 4147056), (6, 3455880), (8, 2591910), (9, 2303920), (10, 2073528), (12, 1727940), (15, 1382352), (16, 1295955), (18, 1151960), (20, 1036764), (24, 863970), (30, 691176), (31, 668880), (36, 575980), (40, 518382), (45, 460784), (48, 431985), (60, 345588), (62, 334440), (72, 287990), (80, 259191), (90, 230392), (93, 222960), (120, 172794), (124, 167220), (144, 143995), (155, 133776), (180, 115196), (186, 111480), (240, 86397), (248, 83610), (279, 74320), (310, 66888), (360, 57598), (372, 55740), (465, 44592), (496, 41805), (558, 37160), (620, 33444), (720, 28799), (744, 27870), (929, 22320), (930, 22296), (1116, 18580), (1240, 16722), (1395, 14864), (1488, 13935), (1858, 11160), (1860, 11148), (2232, 9290), (2480, 8361), (2787, 7440), (2790, 7432), (3716, 5580), (3720, 5574), (4464, 4645)]