21040920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{277}}^1$

素因数の和:505

約数の個数: 96

約数和(自身を含む): 68955120

約数和(自身を除く): 47914200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 211, 277, 360, 422, 554, 633, 831, 844, 1055, 1108, 1266, 1385, 1662, 1688, 1899, 2110, 2216, 2493, 2532, 2770, 3165, 3324, 3798, 4155, 4220, 4986, 5064, 5540, 6330, 6648, 7596, 8310, 8440, 9495, 9972, 11080, 12465, 12660, 15192, 16620, 18990, 19944, 24930, 25320, 33240, 37980, 49860, 58447, 75960, 99720, 116894, 175341, 233788, 292235, 350682, 467576, 526023, 584470, 701364, 876705, 1052046, 1168940, 1402728, 1753410, 2104092, 2337880, 2630115, 3506820, 4208184, 5260230, 7013640, 10520460, 21040920]

約数ペア:

[(1, 21040920), (2, 10520460), (3, 7013640), (4, 5260230), (5, 4208184), (6, 3506820), (8, 2630115), (9, 2337880), (10, 2104092), (12, 1753410), (15, 1402728), (18, 1168940), (20, 1052046), (24, 876705), (30, 701364), (36, 584470), (40, 526023), (45, 467576), (60, 350682), (72, 292235), (90, 233788), (120, 175341), (180, 116894), (211, 99720), (277, 75960), (360, 58447), (422, 49860), (554, 37980), (633, 33240), (831, 25320), (844, 24930), (1055, 19944), (1108, 18990), (1266, 16620), (1385, 15192), (1662, 12660), (1688, 12465), (1899, 11080), (2110, 9972), (2216, 9495), (2493, 8440), (2532, 8310), (2770, 7596), (3165, 6648), (3324, 6330), (3798, 5540), (4155, 5064), (4220, 4986)]