20663280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2609}}^1$

素因数の和:2639

約数の個数: 120

約数和(自身を含む): 75731760

約数和(自身を除く): 55068480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2609, 2640, 3960, 5218, 7827, 7920, 10436, 13045, 15654, 20872, 23481, 26090, 28699, 31308, 39135, 41744, 46962, 52180, 57398, 62616, 78270, 86097, 93924, 104360, 114796, 117405, 125232, 143495, 156540, 172194, 187848, 208720, 229592, 234810, 258291, 286990, 313080, 344388, 375696, 430485, 459184, 469620, 516582, 573980, 626160, 688776, 860970, 939240, 1033164, 1147960, 1291455, 1377552, 1721940, 1878480, 2066328, 2295920, 2582910, 3443880, 4132656, 5165820, 6887760, 10331640, 20663280]

約数ペア:

[(1, 20663280), (2, 10331640), (3, 6887760), (4, 5165820), (5, 4132656), (6, 3443880), (8, 2582910), (9, 2295920), (10, 2066328), (11, 1878480), (12, 1721940), (15, 1377552), (16, 1291455), (18, 1147960), (20, 1033164), (22, 939240), (24, 860970), (30, 688776), (33, 626160), (36, 573980), (40, 516582), (44, 469620), (45, 459184), (48, 430485), (55, 375696), (60, 344388), (66, 313080), (72, 286990), (80, 258291), (88, 234810), (90, 229592), (99, 208720), (110, 187848), (120, 172194), (132, 156540), (144, 143495), (165, 125232), (176, 117405), (180, 114796), (198, 104360), (220, 93924), (240, 86097), (264, 78270), (330, 62616), (360, 57398), (396, 52180), (440, 46962), (495, 41744), (528, 39135), (660, 31308), (720, 28699), (792, 26090), (880, 23481), (990, 20872), (1320, 15654), (1584, 13045), (1980, 10436), (2609, 7920), (2640, 7827), (3960, 5218)]