20792800

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:153

約数の個数: 144

約数和(自身を含む): 59996160

約数和(自身を除く): 39203360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 47, 50, 56, 70, 79, 80, 94, 100, 112, 140, 158, 160, 175, 188, 200, 224, 235, 280, 316, 329, 350, 376, 395, 400, 470, 553, 560, 632, 658, 700, 752, 790, 800, 940, 1106, 1120, 1175, 1264, 1316, 1400, 1504, 1580, 1645, 1880, 1975, 2212, 2350, 2528, 2632, 2765, 2800, 3160, 3290, 3713, 3760, 3950, 4424, 4700, 5264, 5530, 5600, 6320, 6580, 7426, 7520, 7900, 8225, 8848, 9400, 10528, 11060, 12640, 13160, 13825, 14852, 15800, 16450, 17696, 18565, 18800, 22120, 25991, 26320, 27650, 29704, 31600, 32900, 37130, 37600, 44240, 51982, 52640, 55300, 59408, 63200, 65800, 74260, 88480, 92825, 103964, 110600, 118816, 129955, 131600, 148520, 185650, 207928, 221200, 259910, 263200, 297040, 371300, 415856, 442400, 519820, 594080, 649775, 742600, 831712, 1039640, 1299550, 1485200, 2079280, 2599100, 2970400, 4158560, 5198200, 10396400, 20792800]

約数ペア:

[(1, 20792800), (2, 10396400), (4, 5198200), (5, 4158560), (7, 2970400), (8, 2599100), (10, 2079280), (14, 1485200), (16, 1299550), (20, 1039640), (25, 831712), (28, 742600), (32, 649775), (35, 594080), (40, 519820), (47, 442400), (50, 415856), (56, 371300), (70, 297040), (79, 263200), (80, 259910), (94, 221200), (100, 207928), (112, 185650), (140, 148520), (158, 131600), (160, 129955), (175, 118816), (188, 110600), (200, 103964), (224, 92825), (235, 88480), (280, 74260), (316, 65800), (329, 63200), (350, 59408), (376, 55300), (395, 52640), (400, 51982), (470, 44240), (553, 37600), (560, 37130), (632, 32900), (658, 31600), (700, 29704), (752, 27650), (790, 26320), (800, 25991), (940, 22120), (1106, 18800), (1120, 18565), (1175, 17696), (1264, 16450), (1316, 15800), (1400, 14852), (1504, 13825), (1580, 13160), (1645, 12640), (1880, 11060), (1975, 10528), (2212, 9400), (2350, 8848), (2528, 8225), (2632, 7900), (2765, 7520), (2800, 7426), (3160, 6580), (3290, 6320), (3713, 5600), (3760, 5530), (3950, 5264), (4424, 4700)]