279160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{997}}^1$

素因数の和:1015

約数の個数: 32

約数和(自身を含む): 718560

約数和(自身を除く): 439400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 997, 1994, 3988, 4985, 6979, 7976, 9970, 13958, 19940, 27916, 34895, 39880, 55832, 69790, 139580, 279160]

約数ペア:

[(1, 279160), (2, 139580), (4, 69790), (5, 55832), (7, 39880), (8, 34895), (10, 27916), (14, 19940), (20, 13958), (28, 9970), (35, 7976), (40, 6979), (56, 4985), (70, 3988), (140, 1994), (280, 997)]