40990100

素因数分解:

$2^2\times 5^2\times {\mathrm{409901}}^1$

素因数の和:409915

約数の個数: 18

約数和(自身を含む): 88948734

約数和(自身を除く): 47958634

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 409901, 819802, 1639604, 2049505, 4099010, 8198020, 10247525, 20495050, 40990100]

約数ペア:

[(1, 40990100), (2, 20495050), (4, 10247525), (5, 8198020), (10, 4099010), (20, 2049505), (25, 1639604), (50, 819802), (100, 409901)]