51281780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{907}}^1$

素因数の和:1184

約数の個数: 48

約数和(自身を含む): 118069056

約数和(自身を除く): 66787276

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 514, 907, 1028, 1285, 1814, 2570, 2827, 3628, 4535, 5140, 5654, 9070, 9977, 11308, 14135, 18140, 19954, 28270, 39908, 49885, 56540, 99770, 199540, 233099, 466198, 932396, 1165495, 2330990, 2564089, 4661980, 5128178, 10256356, 12820445, 25640890, 51281780]

約数ペア:

[(1, 51281780), (2, 25640890), (4, 12820445), (5, 10256356), (10, 5128178), (11, 4661980), (20, 2564089), (22, 2330990), (44, 1165495), (55, 932396), (110, 466198), (220, 233099), (257, 199540), (514, 99770), (907, 56540), (1028, 49885), (1285, 39908), (1814, 28270), (2570, 19954), (2827, 18140), (3628, 14135), (4535, 11308), (5140, 9977), (5654, 9070)]