254341640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{908363}}^1$

素因数の和:908381

約数の個数: 32

約数和(自身を含む): 654022080

約数和(自身を除く): 399680440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 908363, 1816726, 3633452, 4541815, 6358541, 7266904, 9083630, 12717082, 18167260, 25434164, 31792705, 36334520, 50868328, 63585410, 127170820, 254341640]

約数ペア:

[(1, 254341640), (2, 127170820), (4, 63585410), (5, 50868328), (7, 36334520), (8, 31792705), (10, 25434164), (14, 18167260), (20, 12717082), (28, 9083630), (35, 7266904), (40, 6358541), (56, 4541815), (70, 3633452), (140, 1816726), (280, 908363)]