209445551

素因数分解:

$7^2\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{487}}^1$

素因数の和:699

約数の個数: 24

約数和(自身を含む): 249676416

約数和(自身を除く): 40230865

約数列:

[1, 7, 49, 67, 131, 469, 487, 917, 3283, 3409, 6419, 8777, 23863, 32629, 61439, 63797, 228403, 430073, 446579, 1598821, 3126053, 4274399, 29920793, 209445551]

約数ペア:

[(1, 209445551), (7, 29920793), (49, 4274399), (67, 3126053), (131, 1598821), (469, 446579), (487, 430073), (917, 228403), (3283, 63797), (3409, 61439), (6419, 32629), (8777, 23863)]