20570280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:323

約数の個数: 128

約数和(自身を含む): 66873600

約数和(自身を除く): 46303320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 29, 30, 40, 46, 58, 60, 69, 87, 92, 115, 116, 120, 138, 145, 174, 184, 230, 232, 257, 276, 290, 345, 348, 435, 460, 514, 552, 580, 667, 690, 696, 771, 870, 920, 1028, 1160, 1285, 1334, 1380, 1542, 1740, 2001, 2056, 2570, 2668, 2760, 3084, 3335, 3480, 3855, 4002, 5140, 5336, 5911, 6168, 6670, 7453, 7710, 8004, 10005, 10280, 11822, 13340, 14906, 15420, 16008, 17733, 20010, 22359, 23644, 26680, 29555, 29812, 30840, 35466, 37265, 40020, 44718, 47288, 59110, 59624, 70932, 74530, 80040, 88665, 89436, 111795, 118220, 141864, 149060, 171419, 177330, 178872, 223590, 236440, 298120, 342838, 354660, 447180, 514257, 685676, 709320, 857095, 894360, 1028514, 1371352, 1714190, 2057028, 2571285, 3428380, 4114056, 5142570, 6856760, 10285140, 20570280]

約数ペア:

[(1, 20570280), (2, 10285140), (3, 6856760), (4, 5142570), (5, 4114056), (6, 3428380), (8, 2571285), (10, 2057028), (12, 1714190), (15, 1371352), (20, 1028514), (23, 894360), (24, 857095), (29, 709320), (30, 685676), (40, 514257), (46, 447180), (58, 354660), (60, 342838), (69, 298120), (87, 236440), (92, 223590), (115, 178872), (116, 177330), (120, 171419), (138, 149060), (145, 141864), (174, 118220), (184, 111795), (230, 89436), (232, 88665), (257, 80040), (276, 74530), (290, 70932), (345, 59624), (348, 59110), (435, 47288), (460, 44718), (514, 40020), (552, 37265), (580, 35466), (667, 30840), (690, 29812), (696, 29555), (771, 26680), (870, 23644), (920, 22359), (1028, 20010), (1160, 17733), (1285, 16008), (1334, 15420), (1380, 14906), (1542, 13340), (1740, 11822), (2001, 10280), (2056, 10005), (2570, 8004), (2668, 7710), (2760, 7453), (3084, 6670), (3335, 6168), (3480, 5911), (3855, 5336), (4002, 5140)]