219391420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{154501}}^1$

素因数の和:154581

約数の個数: 24

約数和(自身を含む): 467214048

約数和(自身を除く): 247822628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 154501, 309002, 618004, 772505, 1545010, 3090020, 10969571, 21939142, 43878284, 54847855, 109695710, 219391420]

約数ペア:

[(1, 219391420), (2, 109695710), (4, 54847855), (5, 43878284), (10, 21939142), (20, 10969571), (71, 3090020), (142, 1545010), (284, 772505), (355, 618004), (710, 309002), (1420, 154501)]