25720940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4481}}^1$

素因数の和:4538

約数の個数: 48

約数和(自身を含む): 63249984

約数和(自身を除く): 37529044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 4481, 5740, 8962, 17924, 22405, 31367, 44810, 62734, 89620, 125468, 156835, 183721, 313670, 367442, 627340, 734884, 918605, 1286047, 1837210, 2572094, 3674420, 5144188, 6430235, 12860470, 25720940]

約数ペア:

[(1, 25720940), (2, 12860470), (4, 6430235), (5, 5144188), (7, 3674420), (10, 2572094), (14, 1837210), (20, 1286047), (28, 918605), (35, 734884), (41, 627340), (70, 367442), (82, 313670), (140, 183721), (164, 156835), (205, 125468), (287, 89620), (410, 62734), (574, 44810), (820, 31367), (1148, 22405), (1435, 17924), (2870, 8962), (4481, 5740)]