99978800

素因数分解:

$2^4\times 5^2\times {\mathrm{249947}}^1$

素因数の和:249965

約数の個数: 30

約数和(自身を含む): 240200028

約数和(自身を除く): 140221228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 249947, 499894, 999788, 1249735, 1999576, 2499470, 3999152, 4998940, 6248675, 9997880, 12497350, 19995760, 24994700, 49989400, 99978800]

約数ペア:

[(1, 99978800), (2, 49989400), (4, 24994700), (5, 19995760), (8, 12497350), (10, 9997880), (16, 6248675), (20, 4998940), (25, 3999152), (40, 2499470), (50, 1999576), (80, 1249735), (100, 999788), (200, 499894), (400, 249947)]