257859364

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^2\times {\mathrm{37}}^2$

素因数の和:154

約数の個数: 81

約数和(自身を含む): 557463249

約数和(自身を除く): 299603885

約数列:

[1, 2, 4, 7, 14, 28, 31, 37, 49, 62, 74, 98, 124, 148, 196, 217, 259, 434, 518, 868, 961, 1036, 1147, 1369, 1519, 1813, 1922, 2294, 2738, 3038, 3626, 3844, 4588, 5476, 6076, 6727, 7252, 8029, 9583, 13454, 16058, 19166, 26908, 32116, 35557, 38332, 42439, 47089, 56203, 67081, 71114, 84878, 94178, 112406, 134162, 142228, 169756, 188356, 224812, 248899, 268324, 297073, 497798, 594146, 995596, 1188292, 1315609, 1742293, 2079511, 2631218, 3484586, 4159022, 5262436, 6969172, 8318044, 9209263, 18418526, 36837052, 64464841, 128929682, 257859364]

約数ペア:

[(1, 257859364), (2, 128929682), (4, 64464841), (7, 36837052), (14, 18418526), (28, 9209263), (31, 8318044), (37, 6969172), (49, 5262436), (62, 4159022), (74, 3484586), (98, 2631218), (124, 2079511), (148, 1742293), (196, 1315609), (217, 1188292), (259, 995596), (434, 594146), (518, 497798), (868, 297073), (961, 268324), (1036, 248899), (1147, 224812), (1369, 188356), (1519, 169756), (1813, 142228), (1922, 134162), (2294, 112406), (2738, 94178), (3038, 84878), (3626, 71114), (3844, 67081), (4588, 56203), (5476, 47089), (6076, 42439), (6727, 38332), (7252, 35557), (8029, 32116), (9583, 26908), (13454, 19166)]