210991675

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 308350800

約数和(自身を除く): 97359125

約数列:

[1, 5, 17, 19, 25, 29, 53, 85, 95, 145, 265, 289, 323, 425, 475, 493, 551, 725, 901, 1007, 1325, 1445, 1537, 1615, 2465, 2755, 4505, 5035, 5491, 7225, 7685, 8075, 8381, 9367, 12325, 13775, 15317, 17119, 22525, 25175, 26129, 27455, 29203, 38425, 41905, 46835, 76585, 85595, 130645, 137275, 146015, 159239, 209525, 234175, 291023, 382925, 427975, 444193, 496451, 653225, 730075, 796195, 1455115, 2220965, 2482255, 3980975, 7275575, 8439667, 11104825, 12411275, 42198335, 210991675]

約数ペア:

[(1, 210991675), (5, 42198335), (17, 12411275), (19, 11104825), (25, 8439667), (29, 7275575), (53, 3980975), (85, 2482255), (95, 2220965), (145, 1455115), (265, 796195), (289, 730075), (323, 653225), (425, 496451), (475, 444193), (493, 427975), (551, 382925), (725, 291023), (901, 234175), (1007, 209525), (1325, 159239), (1445, 146015), (1537, 137275), (1615, 130645), (2465, 85595), (2755, 76585), (4505, 46835), (5035, 41905), (5491, 38425), (7225, 29203), (7685, 27455), (8075, 26129), (8381, 25175), (9367, 22525), (12325, 17119), (13775, 15317)]