20406250

素因数分解:

$2^1\times 5^6\times {\mathrm{653}}^1$

素因数の和:685

約数の個数: 28

約数和(自身を含む): 38319822

約数和(自身を除く): 17913572

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 653, 1250, 1306, 3125, 3265, 6250, 6530, 15625, 16325, 31250, 32650, 81625, 163250, 408125, 816250, 2040625, 4081250, 10203125, 20406250]

約数ペア:

[(1, 20406250), (2, 10203125), (5, 4081250), (10, 2040625), (25, 816250), (50, 408125), (125, 163250), (250, 81625), (625, 32650), (653, 31250), (1250, 16325), (1306, 15625), (3125, 6530), (3265, 6250)]