381220

素因数分解:

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

素因数の和:412

約数の個数: 36

約数和(自身を含む): 933660

約数和(自身を除く): 552440

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 389, 490, 778, 980, 1556, 1945, 2723, 3890, 5446, 7780, 10892, 13615, 19061, 27230, 38122, 54460, 76244, 95305, 190610, 381220]

約数ペア:

[(1, 381220), (2, 190610), (4, 95305), (5, 76244), (7, 54460), (10, 38122), (14, 27230), (20, 19061), (28, 13615), (35, 10892), (49, 7780), (70, 5446), (98, 3890), (140, 2723), (196, 1945), (245, 1556), (389, 980), (490, 778)]