213431281

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 260467200

約数和(自身を除く): 47035919

約数列:

[1, 7, 37, 41, 101, 199, 259, 287, 707, 1393, 1517, 3737, 4141, 7363, 8159, 10619, 20099, 26159, 28987, 51541, 57113, 140693, 153217, 301883, 743663, 824059, 1072519, 2113181, 5205641, 5768413, 30490183, 213431281]

約数ペア:

[(1, 213431281), (7, 30490183), (37, 5768413), (41, 5205641), (101, 2113181), (199, 1072519), (259, 824059), (287, 743663), (707, 301883), (1393, 153217), (1517, 140693), (3737, 57113), (4141, 51541), (7363, 28987), (8159, 26159), (10619, 20099)]