21971680

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2591}}^1$

素因数の和:2659

約数の個数: 48

約数和(自身を含む): 52907904

約数和(自身を除く): 30936224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2591, 4240, 5182, 8480, 10364, 12955, 20728, 25910, 41456, 51820, 82912, 103640, 137323, 207280, 274646, 414560, 549292, 686615, 1098584, 1373230, 2197168, 2746460, 4394336, 5492920, 10985840, 21971680]

約数ペア:

[(1, 21971680), (2, 10985840), (4, 5492920), (5, 4394336), (8, 2746460), (10, 2197168), (16, 1373230), (20, 1098584), (32, 686615), (40, 549292), (53, 414560), (80, 274646), (106, 207280), (160, 137323), (212, 103640), (265, 82912), (424, 51820), (530, 41456), (848, 25910), (1060, 20728), (1696, 12955), (2120, 10364), (2591, 8480), (4240, 5182)]