21921500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{2579}}^1$

素因数の和:2615

約数の個数: 48

約数和(自身を含む): 50712480

約数和(自身を除く): 28790980

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 850, 1700, 2125, 2579, 4250, 5158, 8500, 10316, 12895, 25790, 43843, 51580, 64475, 87686, 128950, 175372, 219215, 257900, 322375, 438430, 644750, 876860, 1096075, 1289500, 2192150, 4384300, 5480375, 10960750, 21921500]

約数ペア:

[(1, 21921500), (2, 10960750), (4, 5480375), (5, 4384300), (10, 2192150), (17, 1289500), (20, 1096075), (25, 876860), (34, 644750), (50, 438430), (68, 322375), (85, 257900), (100, 219215), (125, 175372), (170, 128950), (250, 87686), (340, 64475), (425, 51580), (500, 43843), (850, 25790), (1700, 12895), (2125, 10316), (2579, 8500), (4250, 5158)]