31217880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1657}}^1$

素因数の和:1828

約数の個数: 64

約数和(自身を含む): 94307040

約数和(自身を除く): 63089160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 157, 314, 471, 628, 785, 942, 1256, 1570, 1657, 1884, 2355, 3140, 3314, 3768, 4710, 4971, 6280, 6628, 8285, 9420, 9942, 13256, 16570, 18840, 19884, 24855, 33140, 39768, 49710, 66280, 99420, 198840, 260149, 520298, 780447, 1040596, 1300745, 1560894, 2081192, 2601490, 3121788, 3902235, 5202980, 6243576, 7804470, 10405960, 15608940, 31217880]

約数ペア:

[(1, 31217880), (2, 15608940), (3, 10405960), (4, 7804470), (5, 6243576), (6, 5202980), (8, 3902235), (10, 3121788), (12, 2601490), (15, 2081192), (20, 1560894), (24, 1300745), (30, 1040596), (40, 780447), (60, 520298), (120, 260149), (157, 198840), (314, 99420), (471, 66280), (628, 49710), (785, 39768), (942, 33140), (1256, 24855), (1570, 19884), (1657, 18840), (1884, 16570), (2355, 13256), (3140, 9942), (3314, 9420), (3768, 8285), (4710, 6628), (4971, 6280)]