21261625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2$

素因数の和:127

約数の個数: 48

約数和(自身を含む): 33800832

約数和(自身を除く): 12539207

約数列:

[1, 5, 7, 11, 25, 35, 47, 55, 77, 125, 175, 235, 275, 329, 385, 517, 875, 1175, 1375, 1645, 1925, 2209, 2585, 3619, 5875, 8225, 9625, 11045, 12925, 15463, 18095, 24299, 41125, 55225, 64625, 77315, 90475, 121495, 170093, 276125, 386575, 452375, 607475, 850465, 1932875, 3037375, 4252325, 21261625]

約数ペア:

[(1, 21261625), (5, 4252325), (7, 3037375), (11, 1932875), (25, 850465), (35, 607475), (47, 452375), (55, 386575), (77, 276125), (125, 170093), (175, 121495), (235, 90475), (275, 77315), (329, 64625), (385, 55225), (517, 41125), (875, 24299), (1175, 18095), (1375, 15463), (1645, 12925), (1925, 11045), (2209, 9625), (2585, 8225), (3619, 5875)]