21609004

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{859}}^1$

素因数の和:1213

約数の個数: 24

約数和(自身を含む): 39972800

約数和(自身を除く): 18363796

約数列:

[1, 2, 4, 19, 38, 76, 331, 662, 859, 1324, 1718, 3436, 6289, 12578, 16321, 25156, 32642, 65284, 284329, 568658, 1137316, 5402251, 10804502, 21609004]

約数ペア:

[(1, 21609004), (2, 10804502), (4, 5402251), (19, 1137316), (38, 568658), (76, 284329), (331, 65284), (662, 32642), (859, 25156), (1324, 16321), (1718, 12578), (3436, 6289)]