208127521

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 254822400

約数和(自身を除く): 46694879

約数列:

[1, 7, 31, 41, 149, 157, 217, 287, 1043, 1099, 1271, 4619, 4867, 6109, 6437, 8897, 23393, 32333, 34069, 42763, 45059, 163751, 189379, 199547, 725183, 959113, 1325653, 1396829, 5076281, 6713791, 29732503, 208127521]

約数ペア:

[(1, 208127521), (7, 29732503), (31, 6713791), (41, 5076281), (149, 1396829), (157, 1325653), (217, 959113), (287, 725183), (1043, 199547), (1099, 189379), (1271, 163751), (4619, 45059), (4867, 42763), (6109, 34069), (6437, 32333), (8897, 23393)]