20713800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:140

約数の個数: 192

約数和(自身を含む): 71424000

約数和(自身を除く): 50710200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 23, 24, 25, 30, 38, 40, 46, 50, 57, 60, 69, 75, 76, 79, 92, 95, 100, 114, 115, 120, 138, 150, 152, 158, 184, 190, 200, 228, 230, 237, 276, 285, 300, 316, 345, 380, 395, 437, 456, 460, 474, 475, 552, 570, 575, 600, 632, 690, 760, 790, 874, 920, 948, 950, 1140, 1150, 1185, 1311, 1380, 1425, 1501, 1580, 1725, 1748, 1817, 1896, 1900, 1975, 2185, 2280, 2300, 2370, 2622, 2760, 2850, 3002, 3160, 3450, 3496, 3634, 3800, 3950, 4370, 4503, 4600, 4740, 5244, 5451, 5700, 5925, 6004, 6555, 6900, 7268, 7505, 7900, 8740, 9006, 9085, 9480, 10488, 10902, 10925, 11400, 11850, 12008, 13110, 13800, 14536, 15010, 15800, 17480, 18012, 18170, 21804, 21850, 22515, 23700, 26220, 27255, 30020, 32775, 34523, 36024, 36340, 37525, 43608, 43700, 45030, 45425, 47400, 52440, 54510, 60040, 65550, 69046, 72680, 75050, 87400, 90060, 90850, 103569, 109020, 112575, 131100, 136275, 138092, 150100, 172615, 180120, 181700, 207138, 218040, 225150, 262200, 272550, 276184, 300200, 345230, 363400, 414276, 450300, 517845, 545100, 690460, 828552, 863075, 900600, 1035690, 1090200, 1380920, 1726150, 2071380, 2589225, 3452300, 4142760, 5178450, 6904600, 10356900, 20713800]

約数ペア:

[(1, 20713800), (2, 10356900), (3, 6904600), (4, 5178450), (5, 4142760), (6, 3452300), (8, 2589225), (10, 2071380), (12, 1726150), (15, 1380920), (19, 1090200), (20, 1035690), (23, 900600), (24, 863075), (25, 828552), (30, 690460), (38, 545100), (40, 517845), (46, 450300), (50, 414276), (57, 363400), (60, 345230), (69, 300200), (75, 276184), (76, 272550), (79, 262200), (92, 225150), (95, 218040), (100, 207138), (114, 181700), (115, 180120), (120, 172615), (138, 150100), (150, 138092), (152, 136275), (158, 131100), (184, 112575), (190, 109020), (200, 103569), (228, 90850), (230, 90060), (237, 87400), (276, 75050), (285, 72680), (300, 69046), (316, 65550), (345, 60040), (380, 54510), (395, 52440), (437, 47400), (456, 45425), (460, 45030), (474, 43700), (475, 43608), (552, 37525), (570, 36340), (575, 36024), (600, 34523), (632, 32775), (690, 30020), (760, 27255), (790, 26220), (874, 23700), (920, 22515), (948, 21850), (950, 21804), (1140, 18170), (1150, 18012), (1185, 17480), (1311, 15800), (1380, 15010), (1425, 14536), (1501, 13800), (1580, 13110), (1725, 12008), (1748, 11850), (1817, 11400), (1896, 10925), (1900, 10902), (1975, 10488), (2185, 9480), (2280, 9085), (2300, 9006), (2370, 8740), (2622, 7900), (2760, 7505), (2850, 7268), (3002, 6900), (3160, 6555), (3450, 6004), (3496, 5925), (3634, 5700), (3800, 5451), (3950, 5244), (4370, 4740), (4503, 4600)]