215577460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{219977}}^1$

素因数の和:220000

約数の個数: 36

約数和(自身を含む): 526627332

約数和(自身を除く): 311049872

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 219977, 439954, 879908, 1099885, 1539839, 2199770, 3079678, 4399540, 6159356, 7699195, 10778873, 15398390, 21557746, 30796780, 43115492, 53894365, 107788730, 215577460]

約数ペア:

[(1, 215577460), (2, 107788730), (4, 53894365), (5, 43115492), (7, 30796780), (10, 21557746), (14, 15398390), (20, 10778873), (28, 7699195), (35, 6159356), (49, 4399540), (70, 3079678), (98, 2199770), (140, 1539839), (196, 1099885), (245, 879908), (490, 439954), (980, 219977)]