20953600

素因数分解:

$2^9\times 5^2\times {\mathrm{1637}}^1$

素因数の和:1665

約数の個数: 60

約数和(自身を含む): 51945894

約数和(自身を除く): 30992294

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1280, 1600, 1637, 2560, 3200, 3274, 6400, 6548, 8185, 12800, 13096, 16370, 26192, 32740, 40925, 52384, 65480, 81850, 104768, 130960, 163700, 209536, 261920, 327400, 419072, 523840, 654800, 838144, 1047680, 1309600, 2095360, 2619200, 4190720, 5238400, 10476800, 20953600]

約数ペア:

[(1, 20953600), (2, 10476800), (4, 5238400), (5, 4190720), (8, 2619200), (10, 2095360), (16, 1309600), (20, 1047680), (25, 838144), (32, 654800), (40, 523840), (50, 419072), (64, 327400), (80, 261920), (100, 209536), (128, 163700), (160, 130960), (200, 104768), (256, 81850), (320, 65480), (400, 52384), (512, 40925), (640, 32740), (800, 26192), (1280, 16370), (1600, 13096), (1637, 12800), (2560, 8185), (3200, 6548), (3274, 6400)]