1801840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:337

約数の個数: 40

約数和(自身を含む): 4249728

約数和(自身を除く): 2447888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 223, 404, 446, 505, 808, 892, 1010, 1115, 1616, 1784, 2020, 2230, 3568, 4040, 4460, 8080, 8920, 17840, 22523, 45046, 90092, 112615, 180184, 225230, 360368, 450460, 900920, 1801840]

約数ペア:

[(1, 1801840), (2, 900920), (4, 450460), (5, 360368), (8, 225230), (10, 180184), (16, 112615), (20, 90092), (40, 45046), (80, 22523), (101, 17840), (202, 8920), (223, 8080), (404, 4460), (446, 4040), (505, 3568), (808, 2230), (892, 2020), (1010, 1784), (1115, 1616)]