51235760

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3251}}^1$

素因数の和:3461

約数の個数: 40

約数和(自身を含む): 119764656

約数和(自身を除く): 68528896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3251, 3940, 6502, 7880, 13004, 15760, 16255, 26008, 32510, 52016, 65020, 130040, 260080, 640447, 1280894, 2561788, 3202235, 5123576, 6404470, 10247152, 12808940, 25617880, 51235760]

約数ペア:

[(1, 51235760), (2, 25617880), (4, 12808940), (5, 10247152), (8, 6404470), (10, 5123576), (16, 3202235), (20, 2561788), (40, 1280894), (80, 640447), (197, 260080), (394, 130040), (788, 65020), (985, 52016), (1576, 32510), (1970, 26008), (3152, 16255), (3251, 15760), (3940, 13004), (6502, 7880)]