21198704

素因数分解:

$2^4\times {\mathrm{271}}^1\times {\mathrm{4889}}^1$

素因数の和:5168

約数の個数: 20

約数和(自身を含む): 41232480

約数和(自身を除く): 20033776

約数列:

[1, 2, 4, 8, 16, 271, 542, 1084, 2168, 4336, 4889, 9778, 19556, 39112, 78224, 1324919, 2649838, 5299676, 10599352, 21198704]

約数ペア:

[(1, 21198704), (2, 10599352), (4, 5299676), (8, 2649838), (16, 1324919), (271, 78224), (542, 39112), (1084, 19556), (2168, 9778), (4336, 4889)]