28806316

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 66189312

約数和(自身を除く): 37382996

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 124, 154, 196, 217, 308, 341, 431, 434, 539, 682, 862, 868, 1078, 1364, 1519, 1724, 2156, 2387, 3017, 3038, 4741, 4774, 6034, 6076, 9482, 9548, 12068, 13361, 16709, 18964, 21119, 26722, 33187, 33418, 42238, 53444, 66374, 66836, 84476, 93527, 132748, 146971, 187054, 232309, 293942, 374108, 464618, 587884, 654689, 929236, 1028797, 1309378, 2057594, 2618756, 4115188, 7201579, 14403158, 28806316]

約数ペア:

[(1, 28806316), (2, 14403158), (4, 7201579), (7, 4115188), (11, 2618756), (14, 2057594), (22, 1309378), (28, 1028797), (31, 929236), (44, 654689), (49, 587884), (62, 464618), (77, 374108), (98, 293942), (124, 232309), (154, 187054), (196, 146971), (217, 132748), (308, 93527), (341, 84476), (431, 66836), (434, 66374), (539, 53444), (682, 42238), (862, 33418), (868, 33187), (1078, 26722), (1364, 21119), (1519, 18964), (1724, 16709), (2156, 13361), (2387, 12068), (3017, 9548), (3038, 9482), (4741, 6076), (4774, 6034)]