19787061

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 31961088

約数和(自身を除く): 12174027

約数列:

[1, 3, 7, 21, 23, 69, 71, 161, 213, 483, 497, 577, 1491, 1633, 1731, 4039, 4899, 11431, 12117, 13271, 34293, 39813, 40967, 92897, 122901, 278691, 286769, 860307, 942241, 2826723, 6595687, 19787061]

約数ペア:

[(1, 19787061), (3, 6595687), (7, 2826723), (21, 942241), (23, 860307), (69, 286769), (71, 278691), (161, 122901), (213, 92897), (483, 40967), (497, 39813), (577, 34293), (1491, 13271), (1633, 12117), (1731, 11431), (4039, 4899)]