28240020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1039}}^1$

素因数の和:1205

約数の個数: 72

約数和(自身を含む): 86311680

約数和(自身を除く): 58071660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 151, 180, 302, 453, 604, 755, 906, 1039, 1359, 1510, 1812, 2078, 2265, 2718, 3020, 3117, 4156, 4530, 5195, 5436, 6234, 6795, 9060, 9351, 10390, 12468, 13590, 15585, 18702, 20780, 27180, 31170, 37404, 46755, 62340, 93510, 156889, 187020, 313778, 470667, 627556, 784445, 941334, 1412001, 1568890, 1882668, 2353335, 2824002, 3137780, 4706670, 5648004, 7060005, 9413340, 14120010, 28240020]

約数ペア:

[(1, 28240020), (2, 14120010), (3, 9413340), (4, 7060005), (5, 5648004), (6, 4706670), (9, 3137780), (10, 2824002), (12, 2353335), (15, 1882668), (18, 1568890), (20, 1412001), (30, 941334), (36, 784445), (45, 627556), (60, 470667), (90, 313778), (151, 187020), (180, 156889), (302, 93510), (453, 62340), (604, 46755), (755, 37404), (906, 31170), (1039, 27180), (1359, 20780), (1510, 18702), (1812, 15585), (2078, 13590), (2265, 12468), (2718, 10390), (3020, 9351), (3117, 9060), (4156, 6795), (4530, 6234), (5195, 5436)]