20565440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9181}}^1$

素因数の和:9205

約数の個数: 56

約数和(自身を含む): 55973472

約数和(自身を除く): 35408032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9181, 18362, 36724, 45905, 64267, 73448, 91810, 128534, 146896, 183620, 257068, 293792, 321335, 367240, 514136, 587584, 642670, 734480, 1028272, 1285340, 1468960, 2056544, 2570680, 2937920, 4113088, 5141360, 10282720, 20565440]

約数ペア:

[(1, 20565440), (2, 10282720), (4, 5141360), (5, 4113088), (7, 2937920), (8, 2570680), (10, 2056544), (14, 1468960), (16, 1285340), (20, 1028272), (28, 734480), (32, 642670), (35, 587584), (40, 514136), (56, 367240), (64, 321335), (70, 293792), (80, 257068), (112, 183620), (140, 146896), (160, 128534), (224, 91810), (280, 73448), (320, 64267), (448, 45905), (560, 36724), (1120, 18362), (2240, 9181)]