20834640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1523}}^1$

素因数の和:1561

約数の個数: 120

約数和(自身を含む): 73700640

約数和(自身を除く): 52866000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 342, 360, 380, 456, 570, 684, 720, 760, 855, 912, 1140, 1368, 1520, 1523, 1710, 2280, 2736, 3046, 3420, 4560, 4569, 6092, 6840, 7615, 9138, 12184, 13680, 13707, 15230, 18276, 22845, 24368, 27414, 28937, 30460, 36552, 45690, 54828, 57874, 60920, 68535, 73104, 86811, 91380, 109656, 115748, 121840, 137070, 144685, 173622, 182760, 219312, 231496, 260433, 274140, 289370, 347244, 365520, 434055, 462992, 520866, 548280, 578740, 694488, 868110, 1041732, 1096560, 1157480, 1302165, 1388976, 1736220, 2083464, 2314960, 2604330, 3472440, 4166928, 5208660, 6944880, 10417320, 20834640]

約数ペア:

[(1, 20834640), (2, 10417320), (3, 6944880), (4, 5208660), (5, 4166928), (6, 3472440), (8, 2604330), (9, 2314960), (10, 2083464), (12, 1736220), (15, 1388976), (16, 1302165), (18, 1157480), (19, 1096560), (20, 1041732), (24, 868110), (30, 694488), (36, 578740), (38, 548280), (40, 520866), (45, 462992), (48, 434055), (57, 365520), (60, 347244), (72, 289370), (76, 274140), (80, 260433), (90, 231496), (95, 219312), (114, 182760), (120, 173622), (144, 144685), (152, 137070), (171, 121840), (180, 115748), (190, 109656), (228, 91380), (240, 86811), (285, 73104), (304, 68535), (342, 60920), (360, 57874), (380, 54828), (456, 45690), (570, 36552), (684, 30460), (720, 28937), (760, 27414), (855, 24368), (912, 22845), (1140, 18276), (1368, 15230), (1520, 13707), (1523, 13680), (1710, 12184), (2280, 9138), (2736, 7615), (3046, 6840), (3420, 6092), (4560, 4569)]