277788605960

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{691}}^1\times {\mathrm{15679}}^1$

素因数の和:17022

約数の個数: 64

約数和(自身を含む): 626945356800

約数和(自身を除く): 349156750840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 691, 1282, 1382, 2564, 2764, 3205, 3455, 5128, 5528, 6410, 6910, 12820, 13820, 15679, 25640, 27640, 31358, 62716, 78395, 125432, 156790, 313580, 442931, 627160, 885862, 1771724, 2214655, 3543448, 4429310, 8858620, 10050239, 10834189, 17717240, 20100478, 21668378, 40200956, 43336756, 50251195, 54170945, 80401912, 86673512, 100502390, 108341890, 201004780, 216683780, 402009560, 433367560, 6944715149, 13889430298, 27778860596, 34723575745, 55557721192, 69447151490, 138894302980, 277788605960]

約数ペア:

[(1, 277788605960), (2, 138894302980), (4, 69447151490), (5, 55557721192), (8, 34723575745), (10, 27778860596), (20, 13889430298), (40, 6944715149), (641, 433367560), (691, 402009560), (1282, 216683780), (1382, 201004780), (2564, 108341890), (2764, 100502390), (3205, 86673512), (3455, 80401912), (5128, 54170945), (5528, 50251195), (6410, 43336756), (6910, 40200956), (12820, 21668378), (13820, 20100478), (15679, 17717240), (25640, 10834189), (27640, 10050239), (31358, 8858620), (62716, 4429310), (78395, 3543448), (125432, 2214655), (156790, 1771724), (313580, 885862), (442931, 627160)]