20956752

素因数分解:

$2^4\times 3^3\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:505

約数の個数: 80

約数和(自身を含む): 60760000

約数和(自身を除く): 39803248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 139, 144, 216, 278, 349, 417, 432, 556, 698, 834, 1047, 1112, 1251, 1396, 1668, 2094, 2224, 2502, 2792, 3141, 3336, 3753, 4188, 5004, 5584, 6282, 6672, 7506, 8376, 9423, 10008, 12564, 15012, 16752, 18846, 20016, 25128, 30024, 37692, 48511, 50256, 60048, 75384, 97022, 145533, 150768, 194044, 291066, 388088, 436599, 582132, 776176, 873198, 1164264, 1309797, 1746396, 2328528, 2619594, 3492792, 5239188, 6985584, 10478376, 20956752]

約数ペア:

[(1, 20956752), (2, 10478376), (3, 6985584), (4, 5239188), (6, 3492792), (8, 2619594), (9, 2328528), (12, 1746396), (16, 1309797), (18, 1164264), (24, 873198), (27, 776176), (36, 582132), (48, 436599), (54, 388088), (72, 291066), (108, 194044), (139, 150768), (144, 145533), (216, 97022), (278, 75384), (349, 60048), (417, 50256), (432, 48511), (556, 37692), (698, 30024), (834, 25128), (1047, 20016), (1112, 18846), (1251, 16752), (1396, 15012), (1668, 12564), (2094, 10008), (2224, 9423), (2502, 8376), (2792, 7506), (3141, 6672), (3336, 6282), (3753, 5584), (4188, 5004)]