21828272

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80251}}^1$

素因数の和:80276

約数の個数: 20

約数和(自身を含む): 44780616

約数和(自身を除く): 22952344

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80251, 160502, 321004, 642008, 1284016, 1364267, 2728534, 5457068, 10914136, 21828272]

約数ペア:

[(1, 21828272), (2, 10914136), (4, 5457068), (8, 2728534), (16, 1364267), (17, 1284016), (34, 642008), (68, 321004), (136, 160502), (272, 80251)]