28266680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2861}}^1$

素因数の和:2904

約数の個数: 64

約数和(自身を含む): 72122400

約数和(自身を除く): 43855720

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 2861, 4940, 5722, 9880, 11444, 14305, 22888, 28610, 37193, 54359, 57220, 74386, 108718, 114440, 148772, 185965, 217436, 271795, 297544, 371930, 434872, 543590, 706667, 743860, 1087180, 1413334, 1487720, 2174360, 2826668, 3533335, 5653336, 7066670, 14133340, 28266680]

約数ペア:

[(1, 28266680), (2, 14133340), (4, 7066670), (5, 5653336), (8, 3533335), (10, 2826668), (13, 2174360), (19, 1487720), (20, 1413334), (26, 1087180), (38, 743860), (40, 706667), (52, 543590), (65, 434872), (76, 371930), (95, 297544), (104, 271795), (130, 217436), (152, 185965), (190, 148772), (247, 114440), (260, 108718), (380, 74386), (494, 57220), (520, 54359), (760, 37193), (988, 28610), (1235, 22888), (1976, 14305), (2470, 11444), (2861, 9880), (4940, 5722)]