20170520920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{463}}^1\times {\mathrm{9001}}^1$

素因数の和:9497

約数の個数: 96

約数和(自身を含む): 49997828160

約数和(自身を除く): 29827307240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 463, 484, 605, 926, 968, 1210, 1852, 2315, 2420, 3704, 4630, 4840, 5093, 9001, 9260, 10186, 18002, 18520, 20372, 25465, 36004, 40744, 45005, 50930, 56023, 72008, 90010, 99011, 101860, 112046, 180020, 198022, 203720, 224092, 280115, 360040, 396044, 448184, 495055, 560230, 792088, 990110, 1089121, 1120460, 1980220, 2178242, 2240920, 3960440, 4167463, 4356484, 5445605, 8334926, 8712968, 10891210, 16669852, 20837315, 21782420, 33339704, 41674630, 43564840, 45842093, 83349260, 91684186, 166698520, 183368372, 229210465, 366736744, 458420930, 504263023, 916841860, 1008526046, 1833683720, 2017052092, 2521315115, 4034104184, 5042630230, 10085260460, 20170520920]

約数ペア:

[(1, 20170520920), (2, 10085260460), (4, 5042630230), (5, 4034104184), (8, 2521315115), (10, 2017052092), (11, 1833683720), (20, 1008526046), (22, 916841860), (40, 504263023), (44, 458420930), (55, 366736744), (88, 229210465), (110, 183368372), (121, 166698520), (220, 91684186), (242, 83349260), (440, 45842093), (463, 43564840), (484, 41674630), (605, 33339704), (926, 21782420), (968, 20837315), (1210, 16669852), (1852, 10891210), (2315, 8712968), (2420, 8334926), (3704, 5445605), (4630, 4356484), (4840, 4167463), (5093, 3960440), (9001, 2240920), (9260, 2178242), (10186, 1980220), (18002, 1120460), (18520, 1089121), (20372, 990110), (25465, 792088), (36004, 560230), (40744, 495055), (45005, 448184), (50930, 396044), (56023, 360040), (72008, 280115), (90010, 224092), (99011, 203720), (101860, 198022), (112046, 180020)]