64456400

素因数分解:

$2^4\times 5^2\times {\mathrm{161141}}^1$

素因数の和:161159

約数の個数: 30

約数和(自身を含む): 154857462

約数和(自身を除く): 90401062

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 161141, 322282, 644564, 805705, 1289128, 1611410, 2578256, 3222820, 4028525, 6445640, 8057050, 12891280, 16114100, 32228200, 64456400]

約数ペア:

[(1, 64456400), (2, 32228200), (4, 16114100), (5, 12891280), (8, 8057050), (10, 6445640), (16, 4028525), (20, 3222820), (25, 2578256), (40, 1611410), (50, 1289128), (80, 805705), (100, 644564), (200, 322282), (400, 161141)]