12880220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 29338848

約数和(自身を除く): 16458628

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 881, 1462, 1762, 2924, 3524, 3655, 4405, 7310, 8810, 14620, 14977, 17620, 29954, 37883, 59908, 74885, 75766, 149770, 151532, 189415, 299540, 378830, 644011, 757660, 1288022, 2576044, 3220055, 6440110, 12880220]

約数ペア:

[(1, 12880220), (2, 6440110), (4, 3220055), (5, 2576044), (10, 1288022), (17, 757660), (20, 644011), (34, 378830), (43, 299540), (68, 189415), (85, 151532), (86, 149770), (170, 75766), (172, 74885), (215, 59908), (340, 37883), (430, 29954), (731, 17620), (860, 14977), (881, 14620), (1462, 8810), (1762, 7310), (2924, 4405), (3524, 3655)]