20100020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21383}}^1$

素因数の和:21439

約数の個数: 24

約数和(自身を含む): 43110144

約数和(自身を除く): 23010124

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21383, 42766, 85532, 106915, 213830, 427660, 1005001, 2010002, 4020004, 5025005, 10050010, 20100020]

約数ペア:

[(1, 20100020), (2, 10050010), (4, 5025005), (5, 4020004), (10, 2010002), (20, 1005001), (47, 427660), (94, 213830), (188, 106915), (235, 85532), (470, 42766), (940, 21383)]