201761721

素因数分解:

$3^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{6947}}^1$

素因数の和:7421

約数の個数: 24

約数和(自身を含む): 333837504

約数和(自身を除く): 132075783

約数列:

[1, 3, 7, 9, 21, 63, 461, 1383, 3227, 4149, 6947, 9681, 20841, 29043, 48629, 62523, 145887, 437661, 3202567, 9607701, 22417969, 28823103, 67253907, 201761721]

約数ペア:

[(1, 201761721), (3, 67253907), (7, 28823103), (9, 22417969), (21, 9607701), (63, 3202567), (461, 437661), (1383, 145887), (3227, 62523), (4149, 48629), (6947, 29043), (9681, 20841)]