20539000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:110

約数の個数: 128

約数和(自身を含む): 53913600

約数和(自身を除く): 33374600

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 25, 38, 40, 46, 47, 50, 76, 92, 94, 95, 100, 115, 125, 152, 184, 188, 190, 200, 230, 235, 250, 376, 380, 437, 460, 470, 475, 500, 575, 760, 874, 893, 920, 940, 950, 1000, 1081, 1150, 1175, 1748, 1786, 1880, 1900, 2162, 2185, 2300, 2350, 2375, 2875, 3496, 3572, 3800, 4324, 4370, 4465, 4600, 4700, 4750, 5405, 5750, 5875, 7144, 8648, 8740, 8930, 9400, 9500, 10810, 10925, 11500, 11750, 17480, 17860, 19000, 20539, 21620, 21850, 22325, 23000, 23500, 27025, 35720, 41078, 43240, 43700, 44650, 47000, 54050, 54625, 82156, 87400, 89300, 102695, 108100, 109250, 111625, 135125, 164312, 178600, 205390, 216200, 218500, 223250, 270250, 410780, 437000, 446500, 513475, 540500, 821560, 893000, 1026950, 1081000, 2053900, 2567375, 4107800, 5134750, 10269500, 20539000]

約数ペア:

[(1, 20539000), (2, 10269500), (4, 5134750), (5, 4107800), (8, 2567375), (10, 2053900), (19, 1081000), (20, 1026950), (23, 893000), (25, 821560), (38, 540500), (40, 513475), (46, 446500), (47, 437000), (50, 410780), (76, 270250), (92, 223250), (94, 218500), (95, 216200), (100, 205390), (115, 178600), (125, 164312), (152, 135125), (184, 111625), (188, 109250), (190, 108100), (200, 102695), (230, 89300), (235, 87400), (250, 82156), (376, 54625), (380, 54050), (437, 47000), (460, 44650), (470, 43700), (475, 43240), (500, 41078), (575, 35720), (760, 27025), (874, 23500), (893, 23000), (920, 22325), (940, 21850), (950, 21620), (1000, 20539), (1081, 19000), (1150, 17860), (1175, 17480), (1748, 11750), (1786, 11500), (1880, 10925), (1900, 10810), (2162, 9500), (2185, 9400), (2300, 8930), (2350, 8740), (2375, 8648), (2875, 7144), (3496, 5875), (3572, 5750), (3800, 5405), (4324, 4750), (4370, 4700), (4465, 4600)]