21900730

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1579}}^1$

素因数の和:1678

約数の個数: 32

約数和(自身を含む): 42091200

約数和(自身を除く): 20190470

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1579, 2774, 3158, 6935, 7895, 13870, 15790, 30001, 60002, 115267, 150005, 230534, 300010, 576335, 1152670, 2190073, 4380146, 10950365, 21900730]

約数ペア:

[(1, 21900730), (2, 10950365), (5, 4380146), (10, 2190073), (19, 1152670), (38, 576335), (73, 300010), (95, 230534), (146, 150005), (190, 115267), (365, 60002), (730, 30001), (1387, 15790), (1579, 13870), (2774, 7895), (3158, 6935)]