664165000

素因数分解:

$2^3\times 5^4\times {\mathrm{132833}}^1$

素因数の和:132859

約数の個数: 40

約数和(自身を含む): 1556150310

約数和(自身を除く): 891985310

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 132833, 265666, 531332, 664165, 1062664, 1328330, 2656660, 3320825, 5313320, 6641650, 13283300, 16604125, 26566600, 33208250, 66416500, 83020625, 132833000, 166041250, 332082500, 664165000]

約数ペア:

[(1, 664165000), (2, 332082500), (4, 166041250), (5, 132833000), (8, 83020625), (10, 66416500), (20, 33208250), (25, 26566600), (40, 16604125), (50, 13283300), (100, 6641650), (125, 5313320), (200, 3320825), (250, 2656660), (500, 1328330), (625, 1062664), (1000, 664165), (1250, 531332), (2500, 265666), (5000, 132833)]