18969392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91199}}^1$

素因数の和:91220

約数の個数: 20

約数和(自身を含む): 39580800

約数和(自身を除く): 20611408

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91199, 182398, 364796, 729592, 1185587, 1459184, 2371174, 4742348, 9484696, 18969392]

約数ペア:

[(1, 18969392), (2, 9484696), (4, 4742348), (8, 2371174), (13, 1459184), (16, 1185587), (26, 729592), (52, 364796), (104, 182398), (208, 91199)]