31365540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{643}}^1$

素因数の和:929

約数の個数: 72

約数和(自身を含む): 95641728

約数和(自身を除く): 64276188

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 271, 542, 643, 813, 1084, 1286, 1355, 1626, 1929, 2439, 2572, 2710, 3215, 3252, 3858, 4065, 4878, 5420, 5787, 6430, 7716, 8130, 9645, 9756, 11574, 12195, 12860, 16260, 19290, 23148, 24390, 28935, 38580, 48780, 57870, 115740, 174253, 348506, 522759, 697012, 871265, 1045518, 1568277, 1742530, 2091036, 2613795, 3136554, 3485060, 5227590, 6273108, 7841385, 10455180, 15682770, 31365540]

約数ペア:

[(1, 31365540), (2, 15682770), (3, 10455180), (4, 7841385), (5, 6273108), (6, 5227590), (9, 3485060), (10, 3136554), (12, 2613795), (15, 2091036), (18, 1742530), (20, 1568277), (30, 1045518), (36, 871265), (45, 697012), (60, 522759), (90, 348506), (180, 174253), (271, 115740), (542, 57870), (643, 48780), (813, 38580), (1084, 28935), (1286, 24390), (1355, 23148), (1626, 19290), (1929, 16260), (2439, 12860), (2572, 12195), (2710, 11574), (3215, 9756), (3252, 9645), (3858, 8130), (4065, 7716), (4878, 6430), (5420, 5787)]