78897520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{709}}^1$

素因数の和:842

約数の個数: 80

約数和(自身を含む): 199674720

約数和(自身を除く): 120777200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 107, 130, 208, 214, 260, 428, 520, 535, 709, 856, 1040, 1070, 1391, 1418, 1712, 2140, 2782, 2836, 3545, 4280, 5564, 5672, 6955, 7090, 8560, 9217, 11128, 11344, 13910, 14180, 18434, 22256, 27820, 28360, 36868, 46085, 55640, 56720, 73736, 75863, 92170, 111280, 147472, 151726, 184340, 303452, 368680, 379315, 606904, 737360, 758630, 986219, 1213808, 1517260, 1972438, 3034520, 3944876, 4931095, 6069040, 7889752, 9862190, 15779504, 19724380, 39448760, 78897520]

約数ペア:

[(1, 78897520), (2, 39448760), (4, 19724380), (5, 15779504), (8, 9862190), (10, 7889752), (13, 6069040), (16, 4931095), (20, 3944876), (26, 3034520), (40, 1972438), (52, 1517260), (65, 1213808), (80, 986219), (104, 758630), (107, 737360), (130, 606904), (208, 379315), (214, 368680), (260, 303452), (428, 184340), (520, 151726), (535, 147472), (709, 111280), (856, 92170), (1040, 75863), (1070, 73736), (1391, 56720), (1418, 55640), (1712, 46085), (2140, 36868), (2782, 28360), (2836, 27820), (3545, 22256), (4280, 18434), (5564, 14180), (5672, 13910), (6955, 11344), (7090, 11128), (8560, 9217)]