20811476

素因数分解:

$2^2\times 7^2\times {\mathrm{106181}}^1$

素因数の和:106199

約数の個数: 18

約数和(自身を含む): 42366618

約数和(自身を除く): 21555142

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 106181, 212362, 424724, 743267, 1486534, 2973068, 5202869, 10405738, 20811476]

約数ペア:

[(1, 20811476), (2, 10405738), (4, 5202869), (7, 2973068), (14, 1486534), (28, 743267), (49, 424724), (98, 212362), (196, 106181)]