21151600

素因数分解:

$2^4\times 5^2\times {\mathrm{52879}}^1$

素因数の和:52897

約数の個数: 30

約数和(自身を含む): 50817680

約数和(自身を除く): 29666080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52879, 105758, 211516, 264395, 423032, 528790, 846064, 1057580, 1321975, 2115160, 2643950, 4230320, 5287900, 10575800, 21151600]

約数ペア:

[(1, 21151600), (2, 10575800), (4, 5287900), (5, 4230320), (8, 2643950), (10, 2115160), (16, 1321975), (20, 1057580), (25, 846064), (40, 528790), (50, 423032), (80, 264395), (100, 211516), (200, 105758), (400, 52879)]