21000844472

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{6418351}}^1$

素因数の和:6418766

約数の個数: 16

約数和(自身を含む): 39472864800

約数和(自身を除く): 18472020328

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 6418351, 12836702, 25673404, 51346808, 2625105559, 5250211118, 10500422236, 21000844472]

約数ペア:

[(1, 21000844472), (2, 10500422236), (4, 5250211118), (8, 2625105559), (409, 51346808), (818, 25673404), (1636, 12836702), (3272, 6418351)]