20380400

素因数分解:

$2^4\times 5^2\times {\mathrm{50951}}^1$

素因数の和:50969

約数の個数: 30

約数和(自身を含む): 48964872

約数和(自身を除く): 28584472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50951, 101902, 203804, 254755, 407608, 509510, 815216, 1019020, 1273775, 2038040, 2547550, 4076080, 5095100, 10190200, 20380400]

約数ペア:

[(1, 20380400), (2, 10190200), (4, 5095100), (5, 4076080), (8, 2547550), (10, 2038040), (16, 1273775), (20, 1019020), (25, 815216), (40, 509510), (50, 407608), (80, 254755), (100, 203804), (200, 101902), (400, 50951)]