20405196

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{2999}}^1$

素因数の和:3025

約数の個数: 72

約数和(自身を含む): 61152000

約数和(自身を除く): 40746804

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 756, 972, 1134, 1701, 2268, 2999, 3402, 5998, 6804, 8997, 11996, 17994, 20993, 26991, 35988, 41986, 53982, 62979, 80973, 83972, 107964, 125958, 161946, 188937, 242919, 251916, 323892, 377874, 485838, 566811, 728757, 755748, 971676, 1133622, 1457514, 1700433, 2267244, 2915028, 3400866, 5101299, 6801732, 10202598, 20405196]

約数ペア:

[(1, 20405196), (2, 10202598), (3, 6801732), (4, 5101299), (6, 3400866), (7, 2915028), (9, 2267244), (12, 1700433), (14, 1457514), (18, 1133622), (21, 971676), (27, 755748), (28, 728757), (36, 566811), (42, 485838), (54, 377874), (63, 323892), (81, 251916), (84, 242919), (108, 188937), (126, 161946), (162, 125958), (189, 107964), (243, 83972), (252, 80973), (324, 62979), (378, 53982), (486, 41986), (567, 35988), (756, 26991), (972, 20993), (1134, 17994), (1701, 11996), (2268, 8997), (2999, 6804), (3402, 5998)]