30747760

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1951}}^1$

素因数の和:2161

約数の個数: 40

約数和(自身を含む): 71888256

約数和(自身を除く): 41140496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1951, 1970, 3152, 3902, 3940, 7804, 7880, 9755, 15608, 15760, 19510, 31216, 39020, 78040, 156080, 384347, 768694, 1537388, 1921735, 3074776, 3843470, 6149552, 7686940, 15373880, 30747760]

約数ペア:

[(1, 30747760), (2, 15373880), (4, 7686940), (5, 6149552), (8, 3843470), (10, 3074776), (16, 1921735), (20, 1537388), (40, 768694), (80, 384347), (197, 156080), (394, 78040), (788, 39020), (985, 31216), (1576, 19510), (1951, 15760), (1970, 15608), (3152, 9755), (3902, 7880), (3940, 7804)]