21081798

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{37781}}^1$

素因数の和:37820

約数の個数: 24

約数和(自身を含む): 47151936

約数和(自身を除く): 26070138

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558, 37781, 75562, 113343, 226686, 340029, 680058, 1171211, 2342422, 3513633, 7027266, 10540899, 21081798]

約数ペア:

[(1, 21081798), (2, 10540899), (3, 7027266), (6, 3513633), (9, 2342422), (18, 1171211), (31, 680058), (62, 340029), (93, 226686), (186, 113343), (279, 75562), (558, 37781)]