20786896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 60

約数和(自身を含む): 45187212

約数和(自身を除く): 24400316

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 73, 74, 104, 146, 148, 208, 292, 296, 481, 584, 592, 949, 962, 1168, 1369, 1898, 1924, 2701, 2738, 3796, 3848, 5402, 5476, 7592, 7696, 10804, 10952, 15184, 17797, 21608, 21904, 35113, 35594, 43216, 70226, 71188, 99937, 140452, 142376, 199874, 280904, 284752, 399748, 561808, 799496, 1299181, 1598992, 2598362, 5196724, 10393448, 20786896]

約数ペア:

[(1, 20786896), (2, 10393448), (4, 5196724), (8, 2598362), (13, 1598992), (16, 1299181), (26, 799496), (37, 561808), (52, 399748), (73, 284752), (74, 280904), (104, 199874), (146, 142376), (148, 140452), (208, 99937), (292, 71188), (296, 70226), (481, 43216), (584, 35594), (592, 35113), (949, 21904), (962, 21608), (1168, 17797), (1369, 15184), (1898, 10952), (1924, 10804), (2701, 7696), (2738, 7592), (3796, 5476), (3848, 5402)]