4040000

素因数分解:

$2^6\times 5^4\times {\mathrm{101}}^1$

素因数の和:133

約数の個数: 70

約数和(自身を含む): 10117074

約数和(自身を除く): 6077074

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 101, 125, 160, 200, 202, 250, 320, 400, 404, 500, 505, 625, 800, 808, 1000, 1010, 1250, 1600, 1616, 2000, 2020, 2500, 2525, 3232, 4000, 4040, 5000, 5050, 6464, 8000, 8080, 10000, 10100, 12625, 16160, 20000, 20200, 25250, 32320, 40000, 40400, 50500, 63125, 80800, 101000, 126250, 161600, 202000, 252500, 404000, 505000, 808000, 1010000, 2020000, 4040000]

約数ペア:

[(1, 4040000), (2, 2020000), (4, 1010000), (5, 808000), (8, 505000), (10, 404000), (16, 252500), (20, 202000), (25, 161600), (32, 126250), (40, 101000), (50, 80800), (64, 63125), (80, 50500), (100, 40400), (101, 40000), (125, 32320), (160, 25250), (200, 20200), (202, 20000), (250, 16160), (320, 12625), (400, 10100), (404, 10000), (500, 8080), (505, 8000), (625, 6464), (800, 5050), (808, 5000), (1000, 4040), (1010, 4000), (1250, 3232), (1600, 2525), (1616, 2500), (2000, 2020)]