31579389

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:347

約数の個数: 40

約数和(自身を含む): 49823928

約数和(自身を除く): 18244539

約数列:

[1, 3, 9, 27, 37, 41, 81, 111, 123, 257, 333, 369, 771, 999, 1107, 1517, 2313, 2997, 3321, 4551, 6939, 9509, 10537, 13653, 20817, 28527, 31611, 40959, 85581, 94833, 122877, 256743, 284499, 389869, 770229, 853497, 1169607, 3508821, 10526463, 31579389]

約数ペア:

[(1, 31579389), (3, 10526463), (9, 3508821), (27, 1169607), (37, 853497), (41, 770229), (81, 389869), (111, 284499), (123, 256743), (257, 122877), (333, 94833), (369, 85581), (771, 40959), (999, 31611), (1107, 28527), (1517, 20817), (2313, 13653), (2997, 10537), (3321, 9509), (4551, 6939)]