818530239

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1\times {\mathrm{283}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 1137890304

約数和(自身を除く): 319360065

約数列:

[1, 3, 47, 73, 141, 219, 281, 283, 843, 849, 3431, 10293, 13207, 13301, 20513, 20659, 39621, 39903, 61539, 61977, 79523, 238569, 964111, 970973, 2892333, 2912919, 3737581, 5805179, 11212743, 17415537, 272843413, 818530239]

約数ペア:

[(1, 818530239), (3, 272843413), (47, 17415537), (73, 11212743), (141, 5805179), (219, 3737581), (281, 2912919), (283, 2892333), (843, 970973), (849, 964111), (3431, 238569), (10293, 79523), (13207, 61977), (13301, 61539), (20513, 39903), (20659, 39621)]