123458240

素因数分解:

$2^6\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1999}}^1$

素因数の和:2209

約数の個数: 56

約数和(自身を含む): 295656000

約数和(自身を除く): 172197760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 193, 320, 386, 772, 965, 1544, 1930, 1999, 3088, 3860, 3998, 6176, 7720, 7996, 9995, 12352, 15440, 15992, 19990, 30880, 31984, 39980, 61760, 63968, 79960, 127936, 159920, 319840, 385807, 639680, 771614, 1543228, 1929035, 3086456, 3858070, 6172912, 7716140, 12345824, 15432280, 24691648, 30864560, 61729120, 123458240]

約数ペア:

[(1, 123458240), (2, 61729120), (4, 30864560), (5, 24691648), (8, 15432280), (10, 12345824), (16, 7716140), (20, 6172912), (32, 3858070), (40, 3086456), (64, 1929035), (80, 1543228), (160, 771614), (193, 639680), (320, 385807), (386, 319840), (772, 159920), (965, 127936), (1544, 79960), (1930, 63968), (1999, 61760), (3088, 39980), (3860, 31984), (3998, 30880), (6176, 19990), (7720, 15992), (7996, 15440), (9995, 12352)]