128629280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 144

約数和(自身を含む): 338675904

約数和(自身を除く): 210046624

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 67, 71, 80, 104, 130, 134, 142, 160, 169, 208, 260, 268, 284, 335, 338, 355, 416, 520, 536, 568, 670, 676, 710, 845, 871, 923, 1040, 1072, 1136, 1340, 1352, 1420, 1690, 1742, 1846, 2080, 2144, 2272, 2680, 2704, 2840, 3380, 3484, 3692, 4355, 4615, 4757, 5360, 5408, 5680, 6760, 6968, 7384, 8710, 9230, 9514, 10720, 11323, 11360, 11999, 13520, 13936, 14768, 17420, 18460, 19028, 22646, 23785, 23998, 27040, 27872, 29536, 34840, 36920, 38056, 45292, 47570, 47996, 56615, 59995, 61841, 69680, 73840, 76112, 90584, 95140, 95992, 113230, 119990, 123682, 139360, 147680, 152224, 181168, 190280, 191984, 226460, 239980, 247364, 309205, 362336, 380560, 383968, 452920, 479960, 494728, 618410, 761120, 803933, 905840, 959920, 989456, 1236820, 1607866, 1811680, 1919840, 1978912, 2473640, 3215732, 4019665, 4947280, 6431464, 8039330, 9894560, 12862928, 16078660, 25725856, 32157320, 64314640, 128629280]

約数ペア:

[(1, 128629280), (2, 64314640), (4, 32157320), (5, 25725856), (8, 16078660), (10, 12862928), (13, 9894560), (16, 8039330), (20, 6431464), (26, 4947280), (32, 4019665), (40, 3215732), (52, 2473640), (65, 1978912), (67, 1919840), (71, 1811680), (80, 1607866), (104, 1236820), (130, 989456), (134, 959920), (142, 905840), (160, 803933), (169, 761120), (208, 618410), (260, 494728), (268, 479960), (284, 452920), (335, 383968), (338, 380560), (355, 362336), (416, 309205), (520, 247364), (536, 239980), (568, 226460), (670, 191984), (676, 190280), (710, 181168), (845, 152224), (871, 147680), (923, 139360), (1040, 123682), (1072, 119990), (1136, 113230), (1340, 95992), (1352, 95140), (1420, 90584), (1690, 76112), (1742, 73840), (1846, 69680), (2080, 61841), (2144, 59995), (2272, 56615), (2680, 47996), (2704, 47570), (2840, 45292), (3380, 38056), (3484, 36920), (3692, 34840), (4355, 29536), (4615, 27872), (4757, 27040), (5360, 23998), (5408, 23785), (5680, 22646), (6760, 19028), (6968, 18460), (7384, 17420), (8710, 14768), (9230, 13936), (9514, 13520), (10720, 11999), (11323, 11360)]