21742740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{607}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 66393600

約数和(自身を除く): 44650860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 199, 398, 597, 607, 796, 995, 1194, 1214, 1791, 1821, 1990, 2388, 2428, 2985, 3035, 3582, 3642, 3980, 5463, 5970, 6070, 7164, 7284, 8955, 9105, 10926, 11940, 12140, 17910, 18210, 21852, 27315, 35820, 36420, 54630, 109260, 120793, 241586, 362379, 483172, 603965, 724758, 1087137, 1207930, 1449516, 1811895, 2174274, 2415860, 3623790, 4348548, 5435685, 7247580, 10871370, 21742740]

約数ペア:

[(1, 21742740), (2, 10871370), (3, 7247580), (4, 5435685), (5, 4348548), (6, 3623790), (9, 2415860), (10, 2174274), (12, 1811895), (15, 1449516), (18, 1207930), (20, 1087137), (30, 724758), (36, 603965), (45, 483172), (60, 362379), (90, 241586), (180, 120793), (199, 109260), (398, 54630), (597, 36420), (607, 35820), (796, 27315), (995, 21852), (1194, 18210), (1214, 17910), (1791, 12140), (1821, 11940), (1990, 10926), (2388, 9105), (2428, 8955), (2985, 7284), (3035, 7164), (3582, 6070), (3642, 5970), (3980, 5463)]