77891331

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 130014720

約数和(自身を除く): 52123389

約数列:

[1, 3, 7, 17, 21, 49, 51, 71, 119, 147, 213, 357, 439, 497, 833, 1207, 1317, 1491, 2499, 3073, 3479, 3621, 7463, 8449, 9219, 10437, 21511, 22389, 25347, 31169, 52241, 59143, 64533, 93507, 156723, 177429, 218183, 365687, 529873, 654549, 1097061, 1527281, 1589619, 3709111, 4581843, 11127333, 25963777, 77891331]

約数ペア:

[(1, 77891331), (3, 25963777), (7, 11127333), (17, 4581843), (21, 3709111), (49, 1589619), (51, 1527281), (71, 1097061), (119, 654549), (147, 529873), (213, 365687), (357, 218183), (439, 177429), (497, 156723), (833, 93507), (1207, 64533), (1317, 59143), (1491, 52241), (2499, 31169), (3073, 25347), (3479, 22389), (3621, 21511), (7463, 10437), (8449, 9219)]