139384280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{497801}}^1$

素因数の和:497819

約数の個数: 32

約数和(自身を含む): 358417440

約数和(自身を除く): 219033160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 497801, 995602, 1991204, 2489005, 3484607, 3982408, 4978010, 6969214, 9956020, 13938428, 17423035, 19912040, 27876856, 34846070, 69692140, 139384280]

約数ペア:

[(1, 139384280), (2, 69692140), (4, 34846070), (5, 27876856), (7, 19912040), (8, 17423035), (10, 13938428), (14, 9956020), (20, 6969214), (28, 4978010), (35, 3982408), (40, 3484607), (56, 2489005), (70, 1991204), (140, 995602), (280, 497801)]