21388600

素因数分解:

$2^3\times 5^2\times {\mathrm{229}}^1\times {\mathrm{467}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 50052600

約数和(自身を除く): 28664000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 229, 458, 467, 916, 934, 1145, 1832, 1868, 2290, 2335, 3736, 4580, 4670, 5725, 9160, 9340, 11450, 11675, 18680, 22900, 23350, 45800, 46700, 93400, 106943, 213886, 427772, 534715, 855544, 1069430, 2138860, 2673575, 4277720, 5347150, 10694300, 21388600]

約数ペア:

[(1, 21388600), (2, 10694300), (4, 5347150), (5, 4277720), (8, 2673575), (10, 2138860), (20, 1069430), (25, 855544), (40, 534715), (50, 427772), (100, 213886), (200, 106943), (229, 93400), (458, 46700), (467, 45800), (916, 23350), (934, 22900), (1145, 18680), (1832, 11675), (1868, 11450), (2290, 9340), (2335, 9160), (3736, 5725), (4580, 4670)]