21000206

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{17827}}^1$

素因数の和:17879

約数の個数: 16

約数和(自身を含む): 34229760

約数和(自身を除く): 13229554

約数列:

[1, 2, 19, 31, 38, 62, 589, 1178, 17827, 35654, 338713, 552637, 677426, 1105274, 10500103, 21000206]

約数ペア:

[(1, 21000206), (2, 10500103), (19, 1105274), (31, 677426), (38, 552637), (62, 338713), (589, 35654), (1178, 17827)]