20147728

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{30713}}^1$

素因数の和:30762

約数の個数: 20

約数和(自身を含む): 39989628

約数和(自身を除く): 19841900

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 30713, 61426, 122852, 245704, 491408, 1259233, 2518466, 5036932, 10073864, 20147728]

約数ペア:

[(1, 20147728), (2, 10073864), (4, 5036932), (8, 2518466), (16, 1259233), (41, 491408), (82, 245704), (164, 122852), (328, 61426), (656, 30713)]