1440580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 3386880

約数和(自身を除く): 1946300

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 223, 323, 340, 380, 446, 646, 892, 1115, 1292, 1615, 2230, 3230, 3791, 4237, 4460, 6460, 7582, 8474, 15164, 16948, 18955, 21185, 37910, 42370, 72029, 75820, 84740, 144058, 288116, 360145, 720290, 1440580]

約数ペア:

[(1, 1440580), (2, 720290), (4, 360145), (5, 288116), (10, 144058), (17, 84740), (19, 75820), (20, 72029), (34, 42370), (38, 37910), (68, 21185), (76, 18955), (85, 16948), (95, 15164), (170, 8474), (190, 7582), (223, 6460), (323, 4460), (340, 4237), (380, 3791), (446, 3230), (646, 2230), (892, 1615), (1115, 1292)]