2219660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 4989600

約数和(自身を除く): 2769940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 89, 116, 145, 172, 178, 215, 290, 356, 430, 445, 580, 860, 890, 1247, 1780, 2494, 2581, 3827, 4988, 5162, 6235, 7654, 10324, 12470, 12905, 15308, 19135, 24940, 25810, 38270, 51620, 76540, 110983, 221966, 443932, 554915, 1109830, 2219660]

約数ペア:

[(1, 2219660), (2, 1109830), (4, 554915), (5, 443932), (10, 221966), (20, 110983), (29, 76540), (43, 51620), (58, 38270), (86, 25810), (89, 24940), (116, 19135), (145, 15308), (172, 12905), (178, 12470), (215, 10324), (290, 7654), (356, 6235), (430, 5162), (445, 4988), (580, 3827), (860, 2581), (890, 2494), (1247, 1780)]