77968660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:481

約数の個数: 96

約数和(自身を含む): 205970688

約数和(自身を除く): 128002028

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 197, 220, 257, 308, 385, 394, 514, 770, 788, 985, 1028, 1285, 1379, 1540, 1799, 1970, 2167, 2570, 2758, 2827, 3598, 3940, 4334, 5140, 5516, 5654, 6895, 7196, 8668, 8995, 10835, 11308, 13790, 14135, 15169, 17990, 19789, 21670, 27580, 28270, 30338, 35980, 39578, 43340, 50629, 56540, 60676, 75845, 79156, 98945, 101258, 151690, 197890, 202516, 253145, 303380, 354403, 395780, 506290, 556919, 708806, 1012580, 1113838, 1417612, 1772015, 2227676, 2784595, 3544030, 3898433, 5569190, 7088060, 7796866, 11138380, 15593732, 19492165, 38984330, 77968660]

約数ペア:

[(1, 77968660), (2, 38984330), (4, 19492165), (5, 15593732), (7, 11138380), (10, 7796866), (11, 7088060), (14, 5569190), (20, 3898433), (22, 3544030), (28, 2784595), (35, 2227676), (44, 1772015), (55, 1417612), (70, 1113838), (77, 1012580), (110, 708806), (140, 556919), (154, 506290), (197, 395780), (220, 354403), (257, 303380), (308, 253145), (385, 202516), (394, 197890), (514, 151690), (770, 101258), (788, 98945), (985, 79156), (1028, 75845), (1285, 60676), (1379, 56540), (1540, 50629), (1799, 43340), (1970, 39578), (2167, 35980), (2570, 30338), (2758, 28270), (2827, 27580), (3598, 21670), (3940, 19789), (4334, 17990), (5140, 15169), (5516, 14135), (5654, 13790), (6895, 11308), (7196, 10835), (8668, 8995)]