21082672

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101359}}^1$

素因数の和:101380

約数の個数: 20

約数和(自身を含む): 43990240

約数和(自身を除く): 22907568

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101359, 202718, 405436, 810872, 1317667, 1621744, 2635334, 5270668, 10541336, 21082672]

約数ペア:

[(1, 21082672), (2, 10541336), (4, 5270668), (8, 2635334), (13, 1621744), (16, 1317667), (26, 810872), (52, 405436), (104, 202718), (208, 101359)]