20350400

素因数分解:

$2^6\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:131

約数の個数: 168

約数和(自身を含む): 60472320

約数和(自身を除く): 40121920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 32, 35, 40, 46, 50, 56, 64, 70, 79, 80, 92, 100, 112, 115, 140, 158, 160, 161, 175, 184, 200, 224, 230, 280, 316, 320, 322, 350, 368, 395, 400, 448, 460, 553, 560, 575, 632, 644, 700, 736, 790, 800, 805, 920, 1106, 1120, 1150, 1264, 1288, 1400, 1472, 1580, 1600, 1610, 1817, 1840, 1975, 2212, 2240, 2300, 2528, 2576, 2765, 2800, 3160, 3220, 3634, 3680, 3950, 4025, 4424, 4600, 5056, 5152, 5530, 5600, 6320, 6440, 7268, 7360, 7900, 8050, 8848, 9085, 9200, 10304, 11060, 11200, 12640, 12719, 12880, 13825, 14536, 15800, 16100, 17696, 18170, 18400, 22120, 25280, 25438, 25760, 27650, 29072, 31600, 32200, 35392, 36340, 36800, 44240, 45425, 50876, 51520, 55300, 58144, 63200, 63595, 64400, 72680, 88480, 90850, 101752, 110600, 116288, 126400, 127190, 128800, 145360, 176960, 181700, 203504, 221200, 254380, 257600, 290720, 317975, 363400, 407008, 442400, 508760, 581440, 635950, 726800, 814016, 884800, 1017520, 1271900, 1453600, 2035040, 2543800, 2907200, 4070080, 5087600, 10175200, 20350400]

約数ペア:

[(1, 20350400), (2, 10175200), (4, 5087600), (5, 4070080), (7, 2907200), (8, 2543800), (10, 2035040), (14, 1453600), (16, 1271900), (20, 1017520), (23, 884800), (25, 814016), (28, 726800), (32, 635950), (35, 581440), (40, 508760), (46, 442400), (50, 407008), (56, 363400), (64, 317975), (70, 290720), (79, 257600), (80, 254380), (92, 221200), (100, 203504), (112, 181700), (115, 176960), (140, 145360), (158, 128800), (160, 127190), (161, 126400), (175, 116288), (184, 110600), (200, 101752), (224, 90850), (230, 88480), (280, 72680), (316, 64400), (320, 63595), (322, 63200), (350, 58144), (368, 55300), (395, 51520), (400, 50876), (448, 45425), (460, 44240), (553, 36800), (560, 36340), (575, 35392), (632, 32200), (644, 31600), (700, 29072), (736, 27650), (790, 25760), (800, 25438), (805, 25280), (920, 22120), (1106, 18400), (1120, 18170), (1150, 17696), (1264, 16100), (1288, 15800), (1400, 14536), (1472, 13825), (1580, 12880), (1600, 12719), (1610, 12640), (1817, 11200), (1840, 11060), (1975, 10304), (2212, 9200), (2240, 9085), (2300, 8848), (2528, 8050), (2576, 7900), (2765, 7360), (2800, 7268), (3160, 6440), (3220, 6320), (3634, 5600), (3680, 5530), (3950, 5152), (4025, 5056), (4424, 4600)]