80800000

素因数分解:

$2^8\times 5^5\times {\mathrm{101}}^1$

素因数の和:142

約数の個数: 108

約数和(自身を含む): 203588532

約数和(自身を除く): 122788532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 101, 125, 128, 160, 200, 202, 250, 256, 320, 400, 404, 500, 505, 625, 640, 800, 808, 1000, 1010, 1250, 1280, 1600, 1616, 2000, 2020, 2500, 2525, 3125, 3200, 3232, 4000, 4040, 5000, 5050, 6250, 6400, 6464, 8000, 8080, 10000, 10100, 12500, 12625, 12928, 16000, 16160, 20000, 20200, 25000, 25250, 25856, 32000, 32320, 40000, 40400, 50000, 50500, 63125, 64640, 80000, 80800, 100000, 101000, 126250, 129280, 160000, 161600, 200000, 202000, 252500, 315625, 323200, 400000, 404000, 505000, 631250, 646400, 800000, 808000, 1010000, 1262500, 1616000, 2020000, 2525000, 3232000, 4040000, 5050000, 8080000, 10100000, 16160000, 20200000, 40400000, 80800000]

約数ペア:

[(1, 80800000), (2, 40400000), (4, 20200000), (5, 16160000), (8, 10100000), (10, 8080000), (16, 5050000), (20, 4040000), (25, 3232000), (32, 2525000), (40, 2020000), (50, 1616000), (64, 1262500), (80, 1010000), (100, 808000), (101, 800000), (125, 646400), (128, 631250), (160, 505000), (200, 404000), (202, 400000), (250, 323200), (256, 315625), (320, 252500), (400, 202000), (404, 200000), (500, 161600), (505, 160000), (625, 129280), (640, 126250), (800, 101000), (808, 100000), (1000, 80800), (1010, 80000), (1250, 64640), (1280, 63125), (1600, 50500), (1616, 50000), (2000, 40400), (2020, 40000), (2500, 32320), (2525, 32000), (3125, 25856), (3200, 25250), (3232, 25000), (4000, 20200), (4040, 20000), (5000, 16160), (5050, 16000), (6250, 12928), (6400, 12625), (6464, 12500), (8000, 10100), (8080, 10000)]