81364640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72647}}^1$

素因数の和:72669

約数の個数: 48

約数和(自身を含む): 219687552

約数和(自身を除く): 138322912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72647, 145294, 290588, 363235, 508529, 581176, 726470, 1017058, 1162352, 1452940, 2034116, 2324704, 2542645, 2905880, 4068232, 5085290, 5811760, 8136464, 10170580, 11623520, 16272928, 20341160, 40682320, 81364640]

約数ペア:

[(1, 81364640), (2, 40682320), (4, 20341160), (5, 16272928), (7, 11623520), (8, 10170580), (10, 8136464), (14, 5811760), (16, 5085290), (20, 4068232), (28, 2905880), (32, 2542645), (35, 2324704), (40, 2034116), (56, 1452940), (70, 1162352), (80, 1017058), (112, 726470), (140, 581176), (160, 508529), (224, 363235), (280, 290588), (560, 145294), (1120, 72647)]