21651688

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{34259}}^1$

素因数の和:34344

約数の個数: 16

約数和(自身を含む): 41112000

約数和(自身を除く): 19460312

約数列:

[1, 2, 4, 8, 79, 158, 316, 632, 34259, 68518, 137036, 274072, 2706461, 5412922, 10825844, 21651688]

約数ペア:

[(1, 21651688), (2, 10825844), (4, 5412922), (8, 2706461), (79, 274072), (158, 137036), (316, 68518), (632, 34259)]