21388432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102829}}^1$

素因数の和:102850

約数の個数: 20

約数和(自身を含む): 44628220

約数和(自身を除く): 23239788

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102829, 205658, 411316, 822632, 1336777, 1645264, 2673554, 5347108, 10694216, 21388432]

約数ペア:

[(1, 21388432), (2, 10694216), (4, 5347108), (8, 2673554), (13, 1645264), (16, 1336777), (26, 822632), (52, 411316), (104, 205658), (208, 102829)]