639939

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:234

約数の個数: 16

約数和(自身を含む): 915200

約数和(自身を除く): 275261

約数列:

[1, 3, 19, 57, 103, 109, 309, 327, 1957, 2071, 5871, 6213, 11227, 33681, 213313, 639939]

約数ペア:

[(1, 639939), (3, 213313), (19, 33681), (57, 11227), (103, 6213), (109, 5871), (309, 2071), (327, 1957)]