20689450

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{9623}}^1$

素因数の和:9678

約数の個数: 24

約数和(自身を含む): 39381408

約数和(自身を除く): 18691958

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 430, 1075, 2150, 9623, 19246, 48115, 96230, 240575, 413789, 481150, 827578, 2068945, 4137890, 10344725, 20689450]

約数ペア:

[(1, 20689450), (2, 10344725), (5, 4137890), (10, 2068945), (25, 827578), (43, 481150), (50, 413789), (86, 240575), (215, 96230), (430, 48115), (1075, 19246), (2150, 9623)]