64499920

素因数分解:

$2^4\times 5^1\times {\mathrm{739}}^1\times {\mathrm{1091}}^1$

素因数の和:1843

約数の個数: 40

約数和(自身を含む): 150302880

約数和(自身を除く): 85802960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 739, 1091, 1478, 2182, 2956, 3695, 4364, 5455, 5912, 7390, 8728, 10910, 11824, 14780, 17456, 21820, 29560, 43640, 59120, 87280, 806249, 1612498, 3224996, 4031245, 6449992, 8062490, 12899984, 16124980, 32249960, 64499920]

約数ペア:

[(1, 64499920), (2, 32249960), (4, 16124980), (5, 12899984), (8, 8062490), (10, 6449992), (16, 4031245), (20, 3224996), (40, 1612498), (80, 806249), (739, 87280), (1091, 59120), (1478, 43640), (2182, 29560), (2956, 21820), (3695, 17456), (4364, 14780), (5455, 11824), (5912, 10910), (7390, 8728)]