128473840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{2179}}^1$

素因数の和:2270

約数の個数: 80

約数和(自身を含む): 330871680

約数和(自身を除く): 202397840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 67, 80, 88, 110, 134, 176, 220, 268, 335, 440, 536, 670, 737, 880, 1072, 1340, 1474, 2179, 2680, 2948, 3685, 4358, 5360, 5896, 7370, 8716, 10895, 11792, 14740, 17432, 21790, 23969, 29480, 34864, 43580, 47938, 58960, 87160, 95876, 119845, 145993, 174320, 191752, 239690, 291986, 383504, 479380, 583972, 729965, 958760, 1167944, 1459930, 1605923, 1917520, 2335888, 2919860, 3211846, 5839720, 6423692, 8029615, 11679440, 12847384, 16059230, 25694768, 32118460, 64236920, 128473840]

約数ペア:

[(1, 128473840), (2, 64236920), (4, 32118460), (5, 25694768), (8, 16059230), (10, 12847384), (11, 11679440), (16, 8029615), (20, 6423692), (22, 5839720), (40, 3211846), (44, 2919860), (55, 2335888), (67, 1917520), (80, 1605923), (88, 1459930), (110, 1167944), (134, 958760), (176, 729965), (220, 583972), (268, 479380), (335, 383504), (440, 291986), (536, 239690), (670, 191752), (737, 174320), (880, 145993), (1072, 119845), (1340, 95876), (1474, 87160), (2179, 58960), (2680, 47938), (2948, 43580), (3685, 34864), (4358, 29480), (5360, 23969), (5896, 21790), (7370, 17432), (8716, 14740), (10895, 11792)]