21199920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12619}}^1$

素因数の和:12642

約数の個数: 80

約数和(自身を含む): 75114240

約数和(自身を除く): 53914320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12619, 25238, 37857, 50476, 63095, 75714, 88333, 100952, 126190, 151428, 176666, 189285, 201904, 252380, 264999, 302856, 353332, 378570, 441665, 504760, 529998, 605712, 706664, 757140, 883330, 1009520, 1059996, 1324995, 1413328, 1514280, 1766660, 2119992, 2649990, 3028560, 3533320, 4239984, 5299980, 7066640, 10599960, 21199920]

約数ペア:

[(1, 21199920), (2, 10599960), (3, 7066640), (4, 5299980), (5, 4239984), (6, 3533320), (7, 3028560), (8, 2649990), (10, 2119992), (12, 1766660), (14, 1514280), (15, 1413328), (16, 1324995), (20, 1059996), (21, 1009520), (24, 883330), (28, 757140), (30, 706664), (35, 605712), (40, 529998), (42, 504760), (48, 441665), (56, 378570), (60, 353332), (70, 302856), (80, 264999), (84, 252380), (105, 201904), (112, 189285), (120, 176666), (140, 151428), (168, 126190), (210, 100952), (240, 88333), (280, 75714), (336, 63095), (420, 50476), (560, 37857), (840, 25238), (1680, 12619)]