21971660

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15473}}^1$

素因数の和:15553

約数の個数: 24

約数和(自身を含む): 46793376

約数和(自身を除く): 24821716

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 15473, 30946, 61892, 77365, 154730, 309460, 1098583, 2197166, 4394332, 5492915, 10985830, 21971660]

約数ペア:

[(1, 21971660), (2, 10985830), (4, 5492915), (5, 4394332), (10, 2197166), (20, 1098583), (71, 309460), (142, 154730), (284, 77365), (355, 61892), (710, 30946), (1420, 15473)]