21964460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1039}}^1$

素因数の和:1206

約数の個数: 48

約数和(自身を含む): 53114880

約数和(自身を除く): 31150420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151, 302, 604, 755, 1039, 1057, 1510, 2078, 2114, 3020, 4156, 4228, 5195, 5285, 7273, 10390, 10570, 14546, 20780, 21140, 29092, 36365, 72730, 145460, 156889, 313778, 627556, 784445, 1098223, 1568890, 2196446, 3137780, 4392892, 5491115, 10982230, 21964460]

約数ペア:

[(1, 21964460), (2, 10982230), (4, 5491115), (5, 4392892), (7, 3137780), (10, 2196446), (14, 1568890), (20, 1098223), (28, 784445), (35, 627556), (70, 313778), (140, 156889), (151, 145460), (302, 72730), (604, 36365), (755, 29092), (1039, 21140), (1057, 20780), (1510, 14546), (2078, 10570), (2114, 10390), (3020, 7273), (4156, 5285), (4228, 5195)]