638565550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{2687}}^1$

素因数の和:2810

約数の個数: 72

約数和(自身を含む): 1396410624

約数和(自身を除く): 757845074

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 97, 98, 175, 194, 245, 350, 485, 490, 679, 970, 1225, 1358, 2425, 2450, 2687, 3395, 4753, 4850, 5374, 6790, 9506, 13435, 16975, 18809, 23765, 26870, 33950, 37618, 47530, 67175, 94045, 118825, 131663, 134350, 188090, 237650, 260639, 263326, 470225, 521278, 658315, 940450, 1303195, 1316630, 1824473, 2606390, 3291575, 3648946, 6515975, 6583150, 9122365, 12771311, 13031950, 18244730, 25542622, 45611825, 63856555, 91223650, 127713110, 319282775, 638565550]

約数ペア:

[(1, 638565550), (2, 319282775), (5, 127713110), (7, 91223650), (10, 63856555), (14, 45611825), (25, 25542622), (35, 18244730), (49, 13031950), (50, 12771311), (70, 9122365), (97, 6583150), (98, 6515975), (175, 3648946), (194, 3291575), (245, 2606390), (350, 1824473), (485, 1316630), (490, 1303195), (679, 940450), (970, 658315), (1225, 521278), (1358, 470225), (2425, 263326), (2450, 260639), (2687, 237650), (3395, 188090), (4753, 134350), (4850, 131663), (5374, 118825), (6790, 94045), (9506, 67175), (13435, 47530), (16975, 37618), (18809, 33950), (23765, 26870)]