21021200

素因数分解:

$2^4\times 5^2\times {\mathrm{52553}}^1$

素因数の和:52571

約数の個数: 30

約数和(自身を含む): 50504394

約数和(自身を除く): 29483194

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52553, 105106, 210212, 262765, 420424, 525530, 840848, 1051060, 1313825, 2102120, 2627650, 4204240, 5255300, 10510600, 21021200]

約数ペア:

[(1, 21021200), (2, 10510600), (4, 5255300), (5, 4204240), (8, 2627650), (10, 2102120), (16, 1313825), (20, 1051060), (25, 840848), (40, 525530), (50, 420424), (80, 262765), (100, 210212), (200, 105106), (400, 52553)]