81191530

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{23671}}^1$

素因数の和:23699

約数の個数: 32

約数和(自身を含む): 170438400

約数和(自身を除く): 89246870

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 23671, 47342, 118355, 165697, 236710, 331394, 828485, 1159879, 1656970, 2319758, 5799395, 8119153, 11598790, 16238306, 40595765, 81191530]

約数ペア:

[(1, 81191530), (2, 40595765), (5, 16238306), (7, 11598790), (10, 8119153), (14, 5799395), (35, 2319758), (49, 1656970), (70, 1159879), (98, 828485), (245, 331394), (343, 236710), (490, 165697), (686, 118355), (1715, 47342), (3430, 23671)]