18231140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 42933240

約数和(自身を除く): 24702100

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 43, 58, 68, 85, 86, 116, 145, 170, 172, 215, 290, 340, 430, 493, 580, 731, 860, 986, 1247, 1462, 1849, 1972, 2465, 2494, 2924, 3655, 3698, 4930, 4988, 6235, 7310, 7396, 9245, 9860, 12470, 14620, 18490, 21199, 24940, 31433, 36980, 42398, 53621, 62866, 84796, 105995, 107242, 125732, 157165, 211990, 214484, 268105, 314330, 423980, 536210, 628660, 911557, 1072420, 1823114, 3646228, 4557785, 9115570, 18231140]

約数ペア:

[(1, 18231140), (2, 9115570), (4, 4557785), (5, 3646228), (10, 1823114), (17, 1072420), (20, 911557), (29, 628660), (34, 536210), (43, 423980), (58, 314330), (68, 268105), (85, 214484), (86, 211990), (116, 157165), (145, 125732), (170, 107242), (172, 105995), (215, 84796), (290, 62866), (340, 53621), (430, 42398), (493, 36980), (580, 31433), (731, 24940), (860, 21199), (986, 18490), (1247, 14620), (1462, 12470), (1849, 9860), (1972, 9245), (2465, 7396), (2494, 7310), (2924, 6235), (3655, 4988), (3698, 4930)]