31415949

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 51554880

約数和(自身を除く): 20138931

約数列:

[1, 3, 9, 17, 19, 51, 57, 101, 107, 153, 171, 303, 321, 323, 909, 963, 969, 1717, 1819, 1919, 2033, 2907, 5151, 5457, 5757, 6099, 10807, 15453, 16371, 17271, 18297, 32421, 32623, 34561, 97263, 97869, 103683, 183719, 205333, 293607, 311049, 551157, 615999, 1653471, 1847997, 3490661, 10471983, 31415949]

約数ペア:

[(1, 31415949), (3, 10471983), (9, 3490661), (17, 1847997), (19, 1653471), (51, 615999), (57, 551157), (101, 311049), (107, 293607), (153, 205333), (171, 183719), (303, 103683), (321, 97869), (323, 97263), (909, 34561), (963, 32623), (969, 32421), (1717, 18297), (1819, 17271), (1919, 16371), (2033, 15453), (2907, 10807), (5151, 6099), (5457, 5757)]