20785540

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19609}}^1$

素因数の和:19671

約数の個数: 24

約数和(自身を含む): 44475480

約数和(自身を除く): 23689940

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19609, 39218, 78436, 98045, 196090, 392180, 1039277, 2078554, 4157108, 5196385, 10392770, 20785540]

約数ペア:

[(1, 20785540), (2, 10392770), (4, 5196385), (5, 4157108), (10, 2078554), (20, 1039277), (53, 392180), (106, 196090), (212, 98045), (265, 78436), (530, 39218), (1060, 19609)]