1801240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{919}}^1$

素因数の和:944

約数の個数: 48

約数和(自身を含む): 4719600

約数和(自身を除く): 2918360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 919, 980, 1838, 1960, 3676, 4595, 6433, 7352, 9190, 12866, 18380, 25732, 32165, 36760, 45031, 51464, 64330, 90062, 128660, 180124, 225155, 257320, 360248, 450310, 900620, 1801240]

約数ペア:

[(1, 1801240), (2, 900620), (4, 450310), (5, 360248), (7, 257320), (8, 225155), (10, 180124), (14, 128660), (20, 90062), (28, 64330), (35, 51464), (40, 45031), (49, 36760), (56, 32165), (70, 25732), (98, 18380), (140, 12866), (196, 9190), (245, 7352), (280, 6433), (392, 4595), (490, 3676), (919, 1960), (980, 1838)]