21641776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104047}}^1$

素因数の和:104068

約数の個数: 20

約数和(自身を含む): 45156832

約数和(自身を除く): 23515056

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104047, 208094, 416188, 832376, 1352611, 1664752, 2705222, 5410444, 10820888, 21641776]

約数ペア:

[(1, 21641776), (2, 10820888), (4, 5410444), (8, 2705222), (13, 1664752), (16, 1352611), (26, 832376), (52, 416188), (104, 208094), (208, 104047)]