81358480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145283}}^1$

素因数の和:145303

約数の個数: 40

約数和(自身を含む): 216182592

約数和(自身を除く): 134824112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145283, 290566, 581132, 726415, 1016981, 1162264, 1452830, 2033962, 2324528, 2905660, 4067924, 5084905, 5811320, 8135848, 10169810, 11622640, 16271696, 20339620, 40679240, 81358480]

約数ペア:

[(1, 81358480), (2, 40679240), (4, 20339620), (5, 16271696), (7, 11622640), (8, 10169810), (10, 8135848), (14, 5811320), (16, 5084905), (20, 4067924), (28, 2905660), (35, 2324528), (40, 2033962), (56, 1452830), (70, 1162264), (80, 1016981), (112, 726415), (140, 581132), (280, 290566), (560, 145283)]