21297518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{50951}}^1$

素因数の和:50983

約数の個数: 16

約数和(自身を含む): 36685440

約数和(自身を除く): 15387922

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 50951, 101902, 560461, 968069, 1120922, 1936138, 10648759, 21297518]

約数ペア:

[(1, 21297518), (2, 10648759), (11, 1936138), (19, 1120922), (22, 968069), (38, 560461), (209, 101902), (418, 50951)]