12789200

素因数分解:

$2^4\times 5^2\times {\mathrm{31973}}^1$

素因数の和:31991

約数の個数: 30

約数和(自身を含む): 30727014

約数和(自身を除く): 17937814

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 31973, 63946, 127892, 159865, 255784, 319730, 511568, 639460, 799325, 1278920, 1598650, 2557840, 3197300, 6394600, 12789200]

約数ペア:

[(1, 12789200), (2, 6394600), (4, 3197300), (5, 2557840), (8, 1598650), (10, 1278920), (16, 799325), (20, 639460), (25, 511568), (40, 319730), (50, 255784), (80, 159865), (100, 127892), (200, 63946), (400, 31973)]