31132980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{673}}^1$

素因数の和:945

約数の個数: 72

約数和(自身を含む): 94945032

約数和(自身を除く): 63812052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 514, 673, 771, 1028, 1285, 1346, 1542, 2019, 2313, 2570, 2692, 3084, 3365, 3855, 4038, 4626, 5140, 6057, 6730, 7710, 8076, 9252, 10095, 11565, 12114, 13460, 15420, 20190, 23130, 24228, 30285, 40380, 46260, 60570, 121140, 172961, 345922, 518883, 691844, 864805, 1037766, 1556649, 1729610, 2075532, 2594415, 3113298, 3459220, 5188830, 6226596, 7783245, 10377660, 15566490, 31132980]

約数ペア:

[(1, 31132980), (2, 15566490), (3, 10377660), (4, 7783245), (5, 6226596), (6, 5188830), (9, 3459220), (10, 3113298), (12, 2594415), (15, 2075532), (18, 1729610), (20, 1556649), (30, 1037766), (36, 864805), (45, 691844), (60, 518883), (90, 345922), (180, 172961), (257, 121140), (514, 60570), (673, 46260), (771, 40380), (1028, 30285), (1285, 24228), (1346, 23130), (1542, 20190), (2019, 15420), (2313, 13460), (2570, 12114), (2692, 11565), (3084, 10095), (3365, 9252), (3855, 8076), (4038, 7710), (4626, 6730), (5140, 6057)]