20821744

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18329}}^1$

素因数の和:18408

約数の個数: 20

約数和(自身を含む): 40912560

約数和(自身を除く): 20090816

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18329, 36658, 73316, 146632, 293264, 1301359, 2602718, 5205436, 10410872, 20821744]

約数ペア:

[(1, 20821744), (2, 10410872), (4, 5205436), (8, 2602718), (16, 1301359), (71, 293264), (142, 146632), (284, 73316), (568, 36658), (1136, 18329)]