51239080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:526

約数の個数: 64

約数和(自身を含む): 120042000

約数和(自身を除く): 68802920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 89, 148, 178, 185, 296, 356, 370, 389, 445, 712, 740, 778, 890, 1480, 1556, 1780, 1945, 3112, 3293, 3560, 3890, 6586, 7780, 13172, 14393, 15560, 16465, 26344, 28786, 32930, 34621, 57572, 65860, 69242, 71965, 115144, 131720, 138484, 143930, 173105, 276968, 287860, 346210, 575720, 692420, 1280977, 1384840, 2561954, 5123908, 6404885, 10247816, 12809770, 25619540, 51239080]

約数ペア:

[(1, 51239080), (2, 25619540), (4, 12809770), (5, 10247816), (8, 6404885), (10, 5123908), (20, 2561954), (37, 1384840), (40, 1280977), (74, 692420), (89, 575720), (148, 346210), (178, 287860), (185, 276968), (296, 173105), (356, 143930), (370, 138484), (389, 131720), (445, 115144), (712, 71965), (740, 69242), (778, 65860), (890, 57572), (1480, 34621), (1556, 32930), (1780, 28786), (1945, 26344), (3112, 16465), (3293, 15560), (3560, 14393), (3890, 13172), (6586, 7780)]