21900016

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4871}}^1$

素因数の和:5160

約数の個数: 20

約数和(自身を含む): 42591024

約数和(自身を除く): 20691008

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4871, 9742, 19484, 38968, 77936, 1368751, 2737502, 5475004, 10950008, 21900016]

約数ペア:

[(1, 21900016), (2, 10950008), (4, 5475004), (8, 2737502), (16, 1368751), (281, 77936), (562, 38968), (1124, 19484), (2248, 9742), (4496, 4871)]