18365840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2273}}^1$

素因数の和:2387

約数の個数: 40

約数和(自身を含む): 43142328

約数和(自身を除く): 24776488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2273, 4040, 4546, 8080, 9092, 11365, 18184, 22730, 36368, 45460, 90920, 181840, 229573, 459146, 918292, 1147865, 1836584, 2295730, 3673168, 4591460, 9182920, 18365840]

約数ペア:

[(1, 18365840), (2, 9182920), (4, 4591460), (5, 3673168), (8, 2295730), (10, 1836584), (16, 1147865), (20, 918292), (40, 459146), (80, 229573), (101, 181840), (202, 90920), (404, 45460), (505, 36368), (808, 22730), (1010, 18184), (1616, 11365), (2020, 9092), (2273, 8080), (4040, 4546)]