129336400

素因数分解:

$2^4\times 5^2\times {\mathrm{323341}}^1$

素因数の和:323359

約数の個数: 30

約数和(自身を含む): 310731662

約数和(自身を除く): 181395262

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 323341, 646682, 1293364, 1616705, 2586728, 3233410, 5173456, 6466820, 8083525, 12933640, 16167050, 25867280, 32334100, 64668200, 129336400]

約数ペア:

[(1, 129336400), (2, 64668200), (4, 32334100), (5, 25867280), (8, 16167050), (10, 12933640), (16, 8083525), (20, 6466820), (25, 5173456), (40, 3233410), (50, 2586728), (80, 1616705), (100, 1293364), (200, 646682), (400, 323341)]