31240240

素因数分解:

$2^4\times 5^1\times {\mathrm{390503}}^1$

素因数の和:390516

約数の個数: 20

約数和(自身を含む): 72633744

約数和(自身を除く): 41393504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390503, 781006, 1562012, 1952515, 3124024, 3905030, 6248048, 7810060, 15620120, 31240240]

約数ペア:

[(1, 31240240), (2, 15620120), (4, 7810060), (5, 6248048), (8, 3905030), (10, 3124024), (16, 1952515), (20, 1562012), (40, 781006), (80, 390503)]