18520040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{859}}^1$

素因数の和:895

約数の個数: 96

約数和(自身を含む): 52941600

約数和(自身を除く): 34421560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 616, 770, 859, 980, 1078, 1540, 1718, 1960, 2156, 2695, 3080, 3436, 4295, 4312, 5390, 6013, 6872, 8590, 9449, 10780, 12026, 17180, 18898, 21560, 24052, 30065, 34360, 37796, 42091, 47245, 48104, 60130, 66143, 75592, 84182, 94490, 120260, 132286, 168364, 188980, 210455, 240520, 264572, 330715, 336728, 377960, 420910, 463001, 529144, 661430, 841820, 926002, 1322860, 1683640, 1852004, 2315005, 2645720, 3704008, 4630010, 9260020, 18520040]

約数ペア:

[(1, 18520040), (2, 9260020), (4, 4630010), (5, 3704008), (7, 2645720), (8, 2315005), (10, 1852004), (11, 1683640), (14, 1322860), (20, 926002), (22, 841820), (28, 661430), (35, 529144), (40, 463001), (44, 420910), (49, 377960), (55, 336728), (56, 330715), (70, 264572), (77, 240520), (88, 210455), (98, 188980), (110, 168364), (140, 132286), (154, 120260), (196, 94490), (220, 84182), (245, 75592), (280, 66143), (308, 60130), (385, 48104), (392, 47245), (440, 42091), (490, 37796), (539, 34360), (616, 30065), (770, 24052), (859, 21560), (980, 18898), (1078, 17180), (1540, 12026), (1718, 10780), (1960, 9449), (2156, 8590), (2695, 6872), (3080, 6013), (3436, 5390), (4295, 4312)]