21400000

素因数分解:

$2^6\times 5^5\times {\mathrm{107}}^1$

素因数の和:144

約数の個数: 84

約数和(自身を含む): 53574696

約数和(自身を除く): 32174696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 107, 125, 160, 200, 214, 250, 320, 400, 428, 500, 535, 625, 800, 856, 1000, 1070, 1250, 1600, 1712, 2000, 2140, 2500, 2675, 3125, 3424, 4000, 4280, 5000, 5350, 6250, 6848, 8000, 8560, 10000, 10700, 12500, 13375, 17120, 20000, 21400, 25000, 26750, 34240, 40000, 42800, 50000, 53500, 66875, 85600, 100000, 107000, 133750, 171200, 200000, 214000, 267500, 334375, 428000, 535000, 668750, 856000, 1070000, 1337500, 2140000, 2675000, 4280000, 5350000, 10700000, 21400000]

約数ペア:

[(1, 21400000), (2, 10700000), (4, 5350000), (5, 4280000), (8, 2675000), (10, 2140000), (16, 1337500), (20, 1070000), (25, 856000), (32, 668750), (40, 535000), (50, 428000), (64, 334375), (80, 267500), (100, 214000), (107, 200000), (125, 171200), (160, 133750), (200, 107000), (214, 100000), (250, 85600), (320, 66875), (400, 53500), (428, 50000), (500, 42800), (535, 40000), (625, 34240), (800, 26750), (856, 25000), (1000, 21400), (1070, 20000), (1250, 17120), (1600, 13375), (1712, 12500), (2000, 10700), (2140, 10000), (2500, 8560), (2675, 8000), (3125, 6848), (3424, 6250), (4000, 5350), (4280, 5000)]