78156640

素因数分解:

$2^5\times 5^1\times {\mathrm{661}}^1\times {\mathrm{739}}^1$

素因数の和:1415

約数の個数: 48

約数和(自身を含む): 185174640

約数和(自身を除く): 107018000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 661, 739, 1322, 1478, 2644, 2956, 3305, 3695, 5288, 5912, 6610, 7390, 10576, 11824, 13220, 14780, 21152, 23648, 26440, 29560, 52880, 59120, 105760, 118240, 488479, 976958, 1953916, 2442395, 3907832, 4884790, 7815664, 9769580, 15631328, 19539160, 39078320, 78156640]

約数ペア:

[(1, 78156640), (2, 39078320), (4, 19539160), (5, 15631328), (8, 9769580), (10, 7815664), (16, 4884790), (20, 3907832), (32, 2442395), (40, 1953916), (80, 976958), (160, 488479), (661, 118240), (739, 105760), (1322, 59120), (1478, 52880), (2644, 29560), (2956, 26440), (3305, 23648), (3695, 21152), (5288, 14780), (5912, 13220), (6610, 11824), (7390, 10576)]