81339412

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1217}}^1$

素因数の和:1277

約数の個数: 72

約数和(自身を含む): 186617088

約数和(自身を除く): 105277676

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 124, 154, 196, 217, 308, 341, 434, 539, 682, 868, 1078, 1217, 1364, 1519, 2156, 2387, 2434, 3038, 4774, 4868, 6076, 8519, 9548, 13387, 16709, 17038, 26774, 33418, 34076, 37727, 53548, 59633, 66836, 75454, 93709, 119266, 150908, 187418, 238532, 264089, 374836, 414997, 528178, 655963, 829994, 1056356, 1311926, 1659988, 1848623, 2623852, 2904979, 3697246, 5809958, 7394492, 11619916, 20334853, 40669706, 81339412]

約数ペア:

[(1, 81339412), (2, 40669706), (4, 20334853), (7, 11619916), (11, 7394492), (14, 5809958), (22, 3697246), (28, 2904979), (31, 2623852), (44, 1848623), (49, 1659988), (62, 1311926), (77, 1056356), (98, 829994), (124, 655963), (154, 528178), (196, 414997), (217, 374836), (308, 264089), (341, 238532), (434, 187418), (539, 150908), (682, 119266), (868, 93709), (1078, 75454), (1217, 66836), (1364, 59633), (1519, 53548), (2156, 37727), (2387, 34076), (2434, 33418), (3038, 26774), (4774, 17038), (4868, 16709), (6076, 13387), (8519, 9548)]