21809960

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2381}}^1$

素因数の和:2621

約数の個数: 32

約数和(自身を含む): 49307400

約数和(自身を除く): 27497440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 2381, 4580, 4762, 9160, 9524, 11905, 19048, 23810, 47620, 95240, 545249, 1090498, 2180996, 2726245, 4361992, 5452490, 10904980, 21809960]

約数ペア:

[(1, 21809960), (2, 10904980), (4, 5452490), (5, 4361992), (8, 2726245), (10, 2180996), (20, 1090498), (40, 545249), (229, 95240), (458, 47620), (916, 23810), (1145, 19048), (1832, 11905), (2290, 9524), (2381, 9160), (4580, 4762)]