20681648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{99431}}^1$

素因数の和:99452

約数の個数: 20

約数和(自身を含む): 43153488

約数和(自身を除く): 22471840

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 99431, 198862, 397724, 795448, 1292603, 1590896, 2585206, 5170412, 10340824, 20681648]

約数ペア:

[(1, 20681648), (2, 10340824), (4, 5170412), (8, 2585206), (13, 1590896), (16, 1292603), (26, 795448), (52, 397724), (104, 198862), (208, 99431)]