19728904

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{189701}}^1$

素因数の和:189720

約数の個数: 16

約数和(自身を含む): 39837420

約数和(自身を除く): 20108516

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 189701, 379402, 758804, 1517608, 2466113, 4932226, 9864452, 19728904]

約数ペア:

[(1, 19728904), (2, 9864452), (4, 4932226), (8, 2466113), (13, 1517608), (26, 758804), (52, 379402), (104, 189701)]