20857440

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2287}}^1$

素因数の和:2324

約数の個数: 96

約数和(自身を含む): 69189120

約数和(自身を除く): 48331680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 76, 80, 95, 96, 114, 120, 152, 160, 190, 228, 240, 285, 304, 380, 456, 480, 570, 608, 760, 912, 1140, 1520, 1824, 2280, 2287, 3040, 4560, 4574, 6861, 9120, 9148, 11435, 13722, 18296, 22870, 27444, 34305, 36592, 43453, 45740, 54888, 68610, 73184, 86906, 91480, 109776, 130359, 137220, 173812, 182960, 217265, 219552, 260718, 274440, 347624, 365920, 434530, 521436, 548880, 651795, 695248, 869060, 1042872, 1097760, 1303590, 1390496, 1738120, 2085744, 2607180, 3476240, 4171488, 5214360, 6952480, 10428720, 20857440]

約数ペア:

[(1, 20857440), (2, 10428720), (3, 6952480), (4, 5214360), (5, 4171488), (6, 3476240), (8, 2607180), (10, 2085744), (12, 1738120), (15, 1390496), (16, 1303590), (19, 1097760), (20, 1042872), (24, 869060), (30, 695248), (32, 651795), (38, 548880), (40, 521436), (48, 434530), (57, 365920), (60, 347624), (76, 274440), (80, 260718), (95, 219552), (96, 217265), (114, 182960), (120, 173812), (152, 137220), (160, 130359), (190, 109776), (228, 91480), (240, 86906), (285, 73184), (304, 68610), (380, 54888), (456, 45740), (480, 43453), (570, 36592), (608, 34305), (760, 27444), (912, 22870), (1140, 18296), (1520, 13722), (1824, 11435), (2280, 9148), (2287, 9120), (3040, 6861), (4560, 4574)]