1257997825

素因数分解:

$5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 1893997824

約数和(自身を除く): 635999999

約数列:

[1, 5, 7, 25, 31, 35, 49, 155, 157, 175, 211, 217, 245, 775, 785, 1055, 1085, 1099, 1225, 1477, 1519, 3925, 4867, 5275, 5425, 5495, 6541, 7385, 7595, 7693, 10339, 24335, 27475, 32705, 33127, 34069, 36925, 37975, 38465, 45787, 51695, 121675, 163525, 165635, 170345, 192325, 228935, 231889, 238483, 258475, 320509, 828175, 851725, 1026937, 1144675, 1159445, 1192415, 1602545, 1623223, 5134685, 5797225, 5962075, 7188559, 8012725, 8116115, 25673425, 35942795, 40580575, 50319913, 179713975, 251599565, 1257997825]

約数ペア:

[(1, 1257997825), (5, 251599565), (7, 179713975), (25, 50319913), (31, 40580575), (35, 35942795), (49, 25673425), (155, 8116115), (157, 8012725), (175, 7188559), (211, 5962075), (217, 5797225), (245, 5134685), (775, 1623223), (785, 1602545), (1055, 1192415), (1085, 1159445), (1099, 1144675), (1225, 1026937), (1477, 851725), (1519, 828175), (3925, 320509), (4867, 258475), (5275, 238483), (5425, 231889), (5495, 228935), (6541, 192325), (7385, 170345), (7595, 165635), (7693, 163525), (10339, 121675), (24335, 51695), (27475, 45787), (32705, 38465), (33127, 37975), (34069, 36925)]