21705687

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{997}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 32694480

約数和(自身を除く): 10988793

約数列:

[1, 3, 9, 41, 59, 123, 177, 369, 531, 997, 2419, 2991, 7257, 8973, 21771, 40877, 58823, 122631, 176469, 367893, 529407, 2411743, 7235229, 21705687]

約数ペア:

[(1, 21705687), (3, 7235229), (9, 2411743), (41, 529407), (59, 367893), (123, 176469), (177, 122631), (369, 58823), (531, 40877), (997, 21771), (2419, 8973), (2991, 7257)]