27789860

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{4051}}^1$

素因数の和:4081

約数の個数: 48

約数和(自身を含む): 68073600

約数和(自身を除く): 40283740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 4051, 6860, 8102, 16204, 20255, 28357, 40510, 56714, 81020, 113428, 141785, 198499, 283570, 396998, 567140, 793996, 992495, 1389493, 1984990, 2778986, 3969980, 5557972, 6947465, 13894930, 27789860]

約数ペア:

[(1, 27789860), (2, 13894930), (4, 6947465), (5, 5557972), (7, 3969980), (10, 2778986), (14, 1984990), (20, 1389493), (28, 992495), (35, 793996), (49, 567140), (70, 396998), (98, 283570), (140, 198499), (196, 141785), (245, 113428), (343, 81020), (490, 56714), (686, 40510), (980, 28357), (1372, 20255), (1715, 16204), (3430, 8102), (4051, 6860)]