21599336

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3457}}^1$

素因数の和:3545

約数の個数: 32

約数和(自身を含む): 44815680

約数和(自身を除く): 23216344

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 142, 284, 568, 781, 1562, 3124, 3457, 6248, 6914, 13828, 27656, 38027, 76054, 152108, 245447, 304216, 490894, 981788, 1963576, 2699917, 5399834, 10799668, 21599336]

約数ペア:

[(1, 21599336), (2, 10799668), (4, 5399834), (8, 2699917), (11, 1963576), (22, 981788), (44, 490894), (71, 304216), (88, 245447), (142, 152108), (284, 76054), (568, 38027), (781, 27656), (1562, 13828), (3124, 6914), (3457, 6248)]