19944180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{619}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 60933600

約数和(自身を除く): 40989420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 179, 180, 358, 537, 619, 716, 895, 1074, 1238, 1611, 1790, 1857, 2148, 2476, 2685, 3095, 3222, 3580, 3714, 5370, 5571, 6190, 6444, 7428, 8055, 9285, 10740, 11142, 12380, 16110, 18570, 22284, 27855, 32220, 37140, 55710, 110801, 111420, 221602, 332403, 443204, 554005, 664806, 997209, 1108010, 1329612, 1662015, 1994418, 2216020, 3324030, 3988836, 4986045, 6648060, 9972090, 19944180]

約数ペア:

[(1, 19944180), (2, 9972090), (3, 6648060), (4, 4986045), (5, 3988836), (6, 3324030), (9, 2216020), (10, 1994418), (12, 1662015), (15, 1329612), (18, 1108010), (20, 997209), (30, 664806), (36, 554005), (45, 443204), (60, 332403), (90, 221602), (179, 111420), (180, 110801), (358, 55710), (537, 37140), (619, 32220), (716, 27855), (895, 22284), (1074, 18570), (1238, 16110), (1611, 12380), (1790, 11142), (1857, 10740), (2148, 9285), (2476, 8055), (2685, 7428), (3095, 6444), (3222, 6190), (3580, 5571), (3714, 5370)]