81232640

素因数分解:

$2^8\times 5^1\times {\mathrm{63463}}^1$

素因数の和:63484

約数の個数: 36

約数和(自身を含む): 194580624

約数和(自身を除く): 113347984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63463, 126926, 253852, 317315, 507704, 634630, 1015408, 1269260, 2030816, 2538520, 4061632, 5077040, 8123264, 10154080, 16246528, 20308160, 40616320, 81232640]

約数ペア:

[(1, 81232640), (2, 40616320), (4, 20308160), (5, 16246528), (8, 10154080), (10, 8123264), (16, 5077040), (20, 4061632), (32, 2538520), (40, 2030816), (64, 1269260), (80, 1015408), (128, 634630), (160, 507704), (256, 317315), (320, 253852), (640, 126926), (1280, 63463)]