51439600

素因数分解:

$2^4\times 5^2\times {\mathrm{128599}}^1$

素因数の和:128617

約数の個数: 30

約数和(自身を含む): 123584600

約数和(自身を除く): 72145000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 128599, 257198, 514396, 642995, 1028792, 1285990, 2057584, 2571980, 3214975, 5143960, 6429950, 10287920, 12859900, 25719800, 51439600]

約数ペア:

[(1, 51439600), (2, 25719800), (4, 12859900), (5, 10287920), (8, 6429950), (10, 5143960), (16, 3214975), (20, 2571980), (25, 2057584), (40, 1285990), (50, 1028792), (80, 642995), (100, 514396), (200, 257198), (400, 128599)]