20454969717

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{617}}^1$

素因数の和:880

約数の個数: 128

約数和(自身を含む): 38007889920

約数和(自身を除く): 17552920203

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 103, 117, 131, 189, 273, 309, 351, 393, 617, 721, 819, 917, 927, 1179, 1339, 1703, 1851, 2163, 2457, 2751, 2781, 3537, 4017, 4319, 5109, 5553, 6489, 8021, 8253, 9373, 11921, 12051, 12957, 13493, 15327, 16659, 19467, 24063, 24759, 28119, 35763, 36153, 38871, 40479, 45981, 56147, 63551, 72189, 80827, 84357, 94451, 107289, 116613, 121437, 168441, 175409, 190653, 216567, 242481, 253071, 283353, 321867, 364311, 444857, 505323, 526227, 565789, 571959, 727443, 826163, 850059, 1050751, 1227863, 1334571, 1515969, 1578681, 1697367, 1715877, 2182329, 2478489, 2550177, 3152253, 3683589, 4003713, 4736043, 5092101, 5783141, 7355257, 7435467, 8325181, 9456759, 11050767, 12011139, 15276303, 17349423, 22065771, 22306401, 24975543, 28370277, 33152301, 52048269, 58276267, 66197313, 74926629, 108227353, 156144807, 174828801, 198591939, 224779887, 324682059, 524486403, 757591471, 974046177, 1573459209, 2272774413, 2922138531, 6818323239, 20454969717]

約数ペア:

[(1, 20454969717), (3, 6818323239), (7, 2922138531), (9, 2272774413), (13, 1573459209), (21, 974046177), (27, 757591471), (39, 524486403), (63, 324682059), (91, 224779887), (103, 198591939), (117, 174828801), (131, 156144807), (189, 108227353), (273, 74926629), (309, 66197313), (351, 58276267), (393, 52048269), (617, 33152301), (721, 28370277), (819, 24975543), (917, 22306401), (927, 22065771), (1179, 17349423), (1339, 15276303), (1703, 12011139), (1851, 11050767), (2163, 9456759), (2457, 8325181), (2751, 7435467), (2781, 7355257), (3537, 5783141), (4017, 5092101), (4319, 4736043), (5109, 4003713), (5553, 3683589), (6489, 3152253), (8021, 2550177), (8253, 2478489), (9373, 2182329), (11921, 1715877), (12051, 1697367), (12957, 1578681), (13493, 1515969), (15327, 1334571), (16659, 1227863), (19467, 1050751), (24063, 850059), (24759, 826163), (28119, 727443), (35763, 571959), (36153, 565789), (38871, 526227), (40479, 505323), (45981, 444857), (56147, 364311), (63551, 321867), (72189, 283353), (80827, 253071), (84357, 242481), (94451, 216567), (107289, 190653), (116613, 175409), (121437, 168441)]