278675242580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{499}}^1\times {\mathrm{20249}}^1$

素因数の和:20961

約数の個数: 96

約数和(自身を含む): 673596000000

約数和(自身を除く): 394920757420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 499, 788, 985, 998, 1379, 1970, 1996, 2495, 2758, 3493, 3940, 4990, 5516, 6895, 6986, 9980, 13790, 13972, 17465, 20249, 27580, 34930, 40498, 69860, 80996, 98303, 101245, 141743, 196606, 202490, 283486, 393212, 404980, 491515, 566972, 688121, 708715, 983030, 1376242, 1417430, 1966060, 2752484, 2834860, 3440605, 3989053, 6881210, 7978106, 10104251, 13762420, 15956212, 19945265, 20208502, 27923371, 39890530, 40417004, 50521255, 55846742, 70729757, 79781060, 101042510, 111693484, 139616855, 141459514, 202085020, 279233710, 282919028, 353648785, 558467420, 707297570, 1414595140, 1990537447, 3981074894, 7962149788, 9952687235, 13933762129, 19905374470, 27867524258, 39810748940, 55735048516, 69668810645, 139337621290, 278675242580]

約数ペア:

[(1, 278675242580), (2, 139337621290), (4, 69668810645), (5, 55735048516), (7, 39810748940), (10, 27867524258), (14, 19905374470), (20, 13933762129), (28, 9952687235), (35, 7962149788), (70, 3981074894), (140, 1990537447), (197, 1414595140), (394, 707297570), (499, 558467420), (788, 353648785), (985, 282919028), (998, 279233710), (1379, 202085020), (1970, 141459514), (1996, 139616855), (2495, 111693484), (2758, 101042510), (3493, 79781060), (3940, 70729757), (4990, 55846742), (5516, 50521255), (6895, 40417004), (6986, 39890530), (9980, 27923371), (13790, 20208502), (13972, 19945265), (17465, 15956212), (20249, 13762420), (27580, 10104251), (34930, 7978106), (40498, 6881210), (69860, 3989053), (80996, 3440605), (98303, 2834860), (101245, 2752484), (141743, 1966060), (196606, 1417430), (202490, 1376242), (283486, 983030), (393212, 708715), (404980, 688121), (491515, 566972)]