20279560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 56401920

約数和(自身を除く): 36122360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 47, 56, 67, 70, 92, 94, 115, 134, 140, 161, 184, 188, 230, 235, 268, 280, 322, 329, 335, 376, 460, 469, 470, 536, 644, 658, 670, 805, 920, 938, 940, 1081, 1288, 1316, 1340, 1541, 1610, 1645, 1876, 1880, 2162, 2345, 2632, 2680, 3082, 3149, 3220, 3290, 3752, 4324, 4690, 5405, 6164, 6298, 6440, 6580, 7567, 7705, 8648, 9380, 10787, 10810, 12328, 12596, 13160, 15134, 15410, 15745, 18760, 21574, 21620, 22043, 25192, 30268, 30820, 31490, 37835, 43148, 43240, 44086, 53935, 60536, 61640, 62980, 72427, 75670, 86296, 88172, 107870, 110215, 125960, 144854, 151340, 176344, 215740, 220430, 289708, 302680, 362135, 431480, 440860, 506989, 579416, 724270, 881720, 1013978, 1448540, 2027956, 2534945, 2897080, 4055912, 5069890, 10139780, 20279560]

約数ペア:

[(1, 20279560), (2, 10139780), (4, 5069890), (5, 4055912), (7, 2897080), (8, 2534945), (10, 2027956), (14, 1448540), (20, 1013978), (23, 881720), (28, 724270), (35, 579416), (40, 506989), (46, 440860), (47, 431480), (56, 362135), (67, 302680), (70, 289708), (92, 220430), (94, 215740), (115, 176344), (134, 151340), (140, 144854), (161, 125960), (184, 110215), (188, 107870), (230, 88172), (235, 86296), (268, 75670), (280, 72427), (322, 62980), (329, 61640), (335, 60536), (376, 53935), (460, 44086), (469, 43240), (470, 43148), (536, 37835), (644, 31490), (658, 30820), (670, 30268), (805, 25192), (920, 22043), (938, 21620), (940, 21574), (1081, 18760), (1288, 15745), (1316, 15410), (1340, 15134), (1541, 13160), (1610, 12596), (1645, 12328), (1876, 10810), (1880, 10787), (2162, 9380), (2345, 8648), (2632, 7705), (2680, 7567), (3082, 6580), (3149, 6440), (3220, 6298), (3290, 6164), (3752, 5405), (4324, 4690)]