20656250

素因数分解:

$2^1\times 5^6\times {\mathrm{661}}^1$

素因数の和:693

約数の個数: 28

約数和(自身を含む): 38788566

約数和(自身を除く): 18132316

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 661, 1250, 1322, 3125, 3305, 6250, 6610, 15625, 16525, 31250, 33050, 82625, 165250, 413125, 826250, 2065625, 4131250, 10328125, 20656250]

約数ペア:

[(1, 20656250), (2, 10328125), (5, 4131250), (10, 2065625), (25, 826250), (50, 413125), (125, 165250), (250, 82625), (625, 33050), (661, 31250), (1250, 16525), (1322, 15625), (3125, 6610), (3305, 6250)]