21825040

素因数分解:

$2^4\times 5^1\times {\mathrm{272813}}^1$

素因数の和:272826

約数の個数: 20

約数和(自身を含む): 50743404

約数和(自身を除く): 28918364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272813, 545626, 1091252, 1364065, 2182504, 2728130, 4365008, 5456260, 10912520, 21825040]

約数ペア:

[(1, 21825040), (2, 10912520), (4, 5456260), (5, 4365008), (8, 2728130), (10, 2182504), (16, 1364065), (20, 1091252), (40, 545626), (80, 272813)]