77881280

素因数分解:

$2^6\times 5^1\times {\mathrm{257}}^1\times {\mathrm{947}}^1$

素因数の和:1221

約数の個数: 56

約数和(自身を含む): 186373008

約数和(自身を除く): 108491728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 257, 320, 514, 947, 1028, 1285, 1894, 2056, 2570, 3788, 4112, 4735, 5140, 7576, 8224, 9470, 10280, 15152, 16448, 18940, 20560, 30304, 37880, 41120, 60608, 75760, 82240, 151520, 243379, 303040, 486758, 973516, 1216895, 1947032, 2433790, 3894064, 4867580, 7788128, 9735160, 15576256, 19470320, 38940640, 77881280]

約数ペア:

[(1, 77881280), (2, 38940640), (4, 19470320), (5, 15576256), (8, 9735160), (10, 7788128), (16, 4867580), (20, 3894064), (32, 2433790), (40, 1947032), (64, 1216895), (80, 973516), (160, 486758), (257, 303040), (320, 243379), (514, 151520), (947, 82240), (1028, 75760), (1285, 60608), (1894, 41120), (2056, 37880), (2570, 30304), (3788, 20560), (4112, 18940), (4735, 16448), (5140, 15152), (7576, 10280), (8224, 9470)]