2668540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{389}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 6552000

約数和(自身を除く): 3883460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 389, 490, 686, 778, 980, 1372, 1556, 1715, 1945, 2723, 3430, 3890, 5446, 6860, 7780, 10892, 13615, 19061, 27230, 38122, 54460, 76244, 95305, 133427, 190610, 266854, 381220, 533708, 667135, 1334270, 2668540]

約数ペア:

[(1, 2668540), (2, 1334270), (4, 667135), (5, 533708), (7, 381220), (10, 266854), (14, 190610), (20, 133427), (28, 95305), (35, 76244), (49, 54460), (70, 38122), (98, 27230), (140, 19061), (196, 13615), (245, 10892), (343, 7780), (389, 6860), (490, 5446), (686, 3890), (778, 3430), (980, 2723), (1372, 1945), (1556, 1715)]