3938221

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 4785408

約数和(自身を除く): 847187

約数列:

[1, 7, 23, 61, 161, 401, 427, 1403, 2807, 9223, 9821, 24461, 64561, 171227, 562603, 3938221]

約数ペア:

[(1, 3938221), (7, 562603), (23, 171227), (61, 64561), (161, 24461), (401, 9821), (427, 9223), (1403, 2807)]