20017600

素因数分解:

$2^6\times 5^2\times {\mathrm{12511}}^1$

素因数の和:12533

約数の個数: 42

約数和(自身を含む): 49259744

約数和(自身を除く): 29242144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12511, 25022, 50044, 62555, 100088, 125110, 200176, 250220, 312775, 400352, 500440, 625550, 800704, 1000880, 1251100, 2001760, 2502200, 4003520, 5004400, 10008800, 20017600]

約数ペア:

[(1, 20017600), (2, 10008800), (4, 5004400), (5, 4003520), (8, 2502200), (10, 2001760), (16, 1251100), (20, 1000880), (25, 800704), (32, 625550), (40, 500440), (50, 400352), (64, 312775), (80, 250220), (100, 200176), (160, 125110), (200, 100088), (320, 62555), (400, 50044), (800, 25022), (1600, 12511)]