19744760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{467}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 51217920

約数和(自身を除く): 31473160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 151, 280, 302, 467, 604, 755, 934, 1057, 1208, 1510, 1868, 2114, 2335, 3020, 3269, 3736, 4228, 4670, 5285, 6040, 6538, 8456, 9340, 10570, 13076, 16345, 18680, 21140, 26152, 32690, 42280, 65380, 70517, 130760, 141034, 282068, 352585, 493619, 564136, 705170, 987238, 1410340, 1974476, 2468095, 2820680, 3948952, 4936190, 9872380, 19744760]

約数ペア:

[(1, 19744760), (2, 9872380), (4, 4936190), (5, 3948952), (7, 2820680), (8, 2468095), (10, 1974476), (14, 1410340), (20, 987238), (28, 705170), (35, 564136), (40, 493619), (56, 352585), (70, 282068), (140, 141034), (151, 130760), (280, 70517), (302, 65380), (467, 42280), (604, 32690), (755, 26152), (934, 21140), (1057, 18680), (1208, 16345), (1510, 13076), (1868, 10570), (2114, 9340), (2335, 8456), (3020, 6538), (3269, 6040), (3736, 5285), (4228, 4670)]