12209020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^3\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 48

約数和(自身を含む): 27367200

約数和(自身を除く): 15158180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 361, 380, 445, 722, 890, 1444, 1691, 1780, 1805, 3382, 3610, 6764, 6859, 7220, 8455, 13718, 16910, 27436, 32129, 33820, 34295, 64258, 68590, 128516, 137180, 160645, 321290, 610451, 642580, 1220902, 2441804, 3052255, 6104510, 12209020]

約数ペア:

[(1, 12209020), (2, 6104510), (4, 3052255), (5, 2441804), (10, 1220902), (19, 642580), (20, 610451), (38, 321290), (76, 160645), (89, 137180), (95, 128516), (178, 68590), (190, 64258), (356, 34295), (361, 33820), (380, 32129), (445, 27436), (722, 16910), (890, 13718), (1444, 8455), (1691, 7220), (1780, 6859), (1805, 6764), (3382, 3610)]