39988400

素因数分解:

$2^4\times 5^2\times {\mathrm{99971}}^1$

素因数の和:99989

約数の個数: 30

約数和(自身を含む): 96073092

約数和(自身を除く): 56084692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 99971, 199942, 399884, 499855, 799768, 999710, 1599536, 1999420, 2499275, 3998840, 4998550, 7997680, 9997100, 19994200, 39988400]

約数ペア:

[(1, 39988400), (2, 19994200), (4, 9997100), (5, 7997680), (8, 4998550), (10, 3998840), (16, 2499275), (20, 1999420), (25, 1599536), (40, 999710), (50, 799768), (80, 499855), (100, 399884), (200, 199942), (400, 99971)]