20203890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:176

約数の個数: 128

約数和(自身を含む): 59719680

約数和(自身を除く): 39515790

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 23, 30, 35, 42, 46, 47, 69, 70, 89, 94, 105, 115, 138, 141, 161, 178, 210, 230, 235, 267, 282, 322, 329, 345, 445, 470, 483, 534, 623, 658, 690, 705, 805, 890, 966, 987, 1081, 1246, 1335, 1410, 1610, 1645, 1869, 1974, 2047, 2162, 2415, 2670, 3115, 3243, 3290, 3738, 4094, 4183, 4830, 4935, 5405, 6141, 6230, 6486, 7567, 8366, 9345, 9870, 10235, 10810, 12282, 12549, 14329, 15134, 16215, 18690, 20470, 20915, 22701, 25098, 28658, 29281, 30705, 32430, 37835, 41830, 42987, 45402, 58562, 61410, 62745, 71645, 75670, 85974, 87843, 96209, 113505, 125490, 143290, 146405, 175686, 192418, 214935, 227010, 288627, 292810, 429870, 439215, 481045, 577254, 673463, 878430, 962090, 1346926, 1443135, 2020389, 2886270, 3367315, 4040778, 6734630, 10101945, 20203890]

約数ペア:

[(1, 20203890), (2, 10101945), (3, 6734630), (5, 4040778), (6, 3367315), (7, 2886270), (10, 2020389), (14, 1443135), (15, 1346926), (21, 962090), (23, 878430), (30, 673463), (35, 577254), (42, 481045), (46, 439215), (47, 429870), (69, 292810), (70, 288627), (89, 227010), (94, 214935), (105, 192418), (115, 175686), (138, 146405), (141, 143290), (161, 125490), (178, 113505), (210, 96209), (230, 87843), (235, 85974), (267, 75670), (282, 71645), (322, 62745), (329, 61410), (345, 58562), (445, 45402), (470, 42987), (483, 41830), (534, 37835), (623, 32430), (658, 30705), (690, 29281), (705, 28658), (805, 25098), (890, 22701), (966, 20915), (987, 20470), (1081, 18690), (1246, 16215), (1335, 15134), (1410, 14329), (1610, 12549), (1645, 12282), (1869, 10810), (1974, 10235), (2047, 9870), (2162, 9345), (2415, 8366), (2670, 7567), (3115, 6486), (3243, 6230), (3290, 6141), (3738, 5405), (4094, 4935), (4183, 4830)]