217775887

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 264176640

約数和(自身を除く): 46400753

約数列:

[1, 7, 41, 53, 103, 139, 287, 371, 721, 973, 2173, 4223, 5459, 5699, 7367, 14317, 15211, 29561, 38213, 39893, 51569, 100219, 223819, 302047, 586997, 758801, 1566733, 2114329, 4108979, 5311607, 31110841, 217775887]

約数ペア:

[(1, 217775887), (7, 31110841), (41, 5311607), (53, 4108979), (103, 2114329), (139, 1566733), (287, 758801), (371, 586997), (721, 302047), (973, 223819), (2173, 100219), (4223, 51569), (5459, 39893), (5699, 38213), (7367, 29561), (14317, 15211)]