161600000

素因数分解:

$2^9\times 5^5\times {\mathrm{101}}^1$

素因数の和:144

約数の個数: 120

約数和(自身を含む): 407575476

約数和(自身を除く): 245975476

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, 512, 625, 640, 800, 808, 1000, 1010, 1250, 1280, 1600, 1616, 2000, 2020, 2500, 2525, 2560, 3125, 3200, 3232, 4000, 4040, 5000, 5050, 6250, 6400, 6464, 8000, 8080, 10000, 10100, 12500, 12625, 12800, 12928, 16000, 16160, 20000, 20200, 25000, 25250, 25856, 32000, 32320, 40000, 40400, 50000, 50500, 51712, 63125, 64000, 64640, 80000, 80800, 100000, 101000, 126250, 129280, 160000, 161600, 200000, 202000, 252500, 258560, 315625, 320000, 323200, 400000, 404000, 505000, 631250, 646400, 800000, 808000, 1010000, 1262500, 1292800, 1600000, 1616000, 2020000, 2525000, 3232000, 4040000, 5050000, 6464000, 8080000, 10100000, 16160000, 20200000, 32320000, 40400000, 80800000, 161600000]

約数ペア:

[(1, 161600000), (2, 80800000), (4, 40400000), (5, 32320000), (8, 20200000), (10, 16160000), (16, 10100000), (20, 8080000), (25, 6464000), (32, 5050000), (40, 4040000), (50, 3232000), (64, 2525000), (80, 2020000), (100, 1616000), (101, 1600000), (125, 1292800), (128, 1262500), (160, 1010000), (200, 808000), (202, 800000), (250, 646400), (256, 631250), (320, 505000), (400, 404000), (404, 400000), (500, 323200), (505, 320000), (512, 315625), (625, 258560), (640, 252500), (800, 202000), (808, 200000), (1000, 161600), (1010, 160000), (1250, 129280), (1280, 126250), (1600, 101000), (1616, 100000), (2000, 80800), (2020, 80000), (2500, 64640), (2525, 64000), (2560, 63125), (3125, 51712), (3200, 50500), (3232, 50000), (4000, 40400), (4040, 40000), (5000, 32320), (5050, 32000), (6250, 25856), (6400, 25250), (6464, 25000), (8000, 20200), (8080, 20000), (10000, 16160), (10100, 16000), (12500, 12928), (12625, 12800)]