213802505

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{1021}}^1$

素因数の和:1257

約数の個数: 32

約数和(自身を含む): 304539648

約数和(自身を除く): 90737143

約数列:

[1, 5, 7, 31, 35, 155, 193, 217, 965, 1021, 1085, 1351, 5105, 5983, 6755, 7147, 29915, 31651, 35735, 41881, 158255, 197053, 209405, 221557, 985265, 1107785, 1379371, 6108643, 6896855, 30543215, 42760501, 213802505]

約数ペア:

[(1, 213802505), (5, 42760501), (7, 30543215), (31, 6896855), (35, 6108643), (155, 1379371), (193, 1107785), (217, 985265), (965, 221557), (1021, 209405), (1085, 197053), (1351, 158255), (5105, 41881), (5983, 35735), (6755, 31651), (7147, 29915)]