31121820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19211}}^1$

素因数の和:19232

約数の個数: 60

約数和(自身を含む): 97635384

約数和(自身を除く): 66513564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 19211, 38422, 57633, 76844, 96055, 115266, 172899, 192110, 230532, 288165, 345798, 384220, 518697, 576330, 691596, 864495, 1037394, 1152660, 1556091, 1728990, 2074788, 2593485, 3112182, 3457980, 5186970, 6224364, 7780455, 10373940, 15560910, 31121820]

約数ペア:

[(1, 31121820), (2, 15560910), (3, 10373940), (4, 7780455), (5, 6224364), (6, 5186970), (9, 3457980), (10, 3112182), (12, 2593485), (15, 2074788), (18, 1728990), (20, 1556091), (27, 1152660), (30, 1037394), (36, 864495), (45, 691596), (54, 576330), (60, 518697), (81, 384220), (90, 345798), (108, 288165), (135, 230532), (162, 192110), (180, 172899), (270, 115266), (324, 96055), (405, 76844), (540, 57633), (810, 38422), (1620, 19211)]