21372190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1447}}^1$

素因数の和:1672

約数の個数: 32

約数和(自身を含む): 44204544

約数和(自身を除く): 22832354

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 211, 422, 1055, 1447, 1477, 2110, 2894, 2954, 7235, 7385, 10129, 14470, 14770, 20258, 50645, 101290, 305317, 610634, 1526585, 2137219, 3053170, 4274438, 10686095, 21372190]

約数ペア:

[(1, 21372190), (2, 10686095), (5, 4274438), (7, 3053170), (10, 2137219), (14, 1526585), (35, 610634), (70, 305317), (211, 101290), (422, 50645), (1055, 20258), (1447, 14770), (1477, 14470), (2110, 10129), (2894, 7385), (2954, 7235)]