20572440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1289}}^1$

素因数の和:1329

約数の個数: 128

約数和(自身を含む): 74304000

約数和(自身を除く): 53731560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1289, 1330, 1596, 1995, 2280, 2578, 2660, 3192, 3867, 3990, 5156, 5320, 6445, 7734, 7980, 9023, 10312, 12890, 15468, 15960, 18046, 19335, 24491, 25780, 27069, 30936, 36092, 38670, 45115, 48982, 51560, 54138, 72184, 73473, 77340, 90230, 97964, 108276, 122455, 135345, 146946, 154680, 171437, 180460, 195928, 216552, 244910, 270690, 293892, 342874, 360920, 367365, 489820, 514311, 541380, 587784, 685748, 734730, 857185, 979640, 1028622, 1082760, 1371496, 1469460, 1714370, 2057244, 2571555, 2938920, 3428740, 4114488, 5143110, 6857480, 10286220, 20572440]

約数ペア:

[(1, 20572440), (2, 10286220), (3, 6857480), (4, 5143110), (5, 4114488), (6, 3428740), (7, 2938920), (8, 2571555), (10, 2057244), (12, 1714370), (14, 1469460), (15, 1371496), (19, 1082760), (20, 1028622), (21, 979640), (24, 857185), (28, 734730), (30, 685748), (35, 587784), (38, 541380), (40, 514311), (42, 489820), (56, 367365), (57, 360920), (60, 342874), (70, 293892), (76, 270690), (84, 244910), (95, 216552), (105, 195928), (114, 180460), (120, 171437), (133, 154680), (140, 146946), (152, 135345), (168, 122455), (190, 108276), (210, 97964), (228, 90230), (266, 77340), (280, 73473), (285, 72184), (380, 54138), (399, 51560), (420, 48982), (456, 45115), (532, 38670), (570, 36092), (665, 30936), (760, 27069), (798, 25780), (840, 24491), (1064, 19335), (1140, 18046), (1289, 15960), (1330, 15468), (1596, 12890), (1995, 10312), (2280, 9023), (2578, 7980), (2660, 7734), (3192, 6445), (3867, 5320), (3990, 5156)]