21465548

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{811}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 40583760

約数和(自身を除く): 19118212

約数列:

[1, 2, 4, 13, 26, 52, 509, 811, 1018, 1622, 2036, 3244, 6617, 10543, 13234, 21086, 26468, 42172, 412799, 825598, 1651196, 5366387, 10732774, 21465548]

約数ペア:

[(1, 21465548), (2, 10732774), (4, 5366387), (13, 1651196), (26, 825598), (52, 412799), (509, 42172), (811, 26468), (1018, 21086), (1622, 13234), (2036, 10543), (3244, 6617)]