28762400

素因数分解:

$2^5\times 5^2\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:406

約数の個数: 72

約数和(自身を含む): 70972020

約数和(自身を除く): 42209620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 157, 160, 200, 229, 314, 400, 458, 628, 785, 800, 916, 1145, 1256, 1570, 1832, 2290, 2512, 3140, 3664, 3925, 4580, 5024, 5725, 6280, 7328, 7850, 9160, 11450, 12560, 15700, 18320, 22900, 25120, 31400, 35953, 36640, 45800, 62800, 71906, 91600, 125600, 143812, 179765, 183200, 287624, 359530, 575248, 719060, 898825, 1150496, 1438120, 1797650, 2876240, 3595300, 5752480, 7190600, 14381200, 28762400]

約数ペア:

[(1, 28762400), (2, 14381200), (4, 7190600), (5, 5752480), (8, 3595300), (10, 2876240), (16, 1797650), (20, 1438120), (25, 1150496), (32, 898825), (40, 719060), (50, 575248), (80, 359530), (100, 287624), (157, 183200), (160, 179765), (200, 143812), (229, 125600), (314, 91600), (400, 71906), (458, 62800), (628, 45800), (785, 36640), (800, 35953), (916, 31400), (1145, 25120), (1256, 22900), (1570, 18320), (1832, 15700), (2290, 12560), (2512, 11450), (3140, 9160), (3664, 7850), (3925, 7328), (4580, 6280), (5024, 5725)]