20439216

素因数分解:

$2^4\times 3^5\times 7^1\times {\mathrm{751}}^1$

素因数の和:781

約数の個数: 120

約数和(自身を含む): 67884544

約数和(自身を除く): 47445328

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 54, 56, 63, 72, 81, 84, 108, 112, 126, 144, 162, 168, 189, 216, 243, 252, 324, 336, 378, 432, 486, 504, 567, 648, 751, 756, 972, 1008, 1134, 1296, 1502, 1512, 1701, 1944, 2253, 2268, 3004, 3024, 3402, 3888, 4506, 4536, 5257, 6008, 6759, 6804, 9012, 9072, 10514, 12016, 13518, 13608, 15771, 18024, 20277, 21028, 27036, 27216, 31542, 36048, 40554, 42056, 47313, 54072, 60831, 63084, 81108, 84112, 94626, 108144, 121662, 126168, 141939, 162216, 182493, 189252, 243324, 252336, 283878, 324432, 364986, 378504, 425817, 486648, 567756, 729972, 757008, 851634, 973296, 1135512, 1277451, 1459944, 1703268, 2271024, 2554902, 2919888, 3406536, 5109804, 6813072, 10219608, 20439216]

約数ペア:

[(1, 20439216), (2, 10219608), (3, 6813072), (4, 5109804), (6, 3406536), (7, 2919888), (8, 2554902), (9, 2271024), (12, 1703268), (14, 1459944), (16, 1277451), (18, 1135512), (21, 973296), (24, 851634), (27, 757008), (28, 729972), (36, 567756), (42, 486648), (48, 425817), (54, 378504), (56, 364986), (63, 324432), (72, 283878), (81, 252336), (84, 243324), (108, 189252), (112, 182493), (126, 162216), (144, 141939), (162, 126168), (168, 121662), (189, 108144), (216, 94626), (243, 84112), (252, 81108), (324, 63084), (336, 60831), (378, 54072), (432, 47313), (486, 42056), (504, 40554), (567, 36048), (648, 31542), (751, 27216), (756, 27036), (972, 21028), (1008, 20277), (1134, 18024), (1296, 15771), (1502, 13608), (1512, 13518), (1701, 12016), (1944, 10514), (2253, 9072), (2268, 9012), (3004, 6804), (3024, 6759), (3402, 6008), (3888, 5257), (4506, 4536)]