81661120

素因数分解:

$2^6\times 5^1\times {\mathrm{255191}}^1$

素因数の和:255208

約数の個数: 28

約数和(自身を含む): 194456304

約数和(自身を除く): 112795184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 255191, 510382, 1020764, 1275955, 2041528, 2551910, 4083056, 5103820, 8166112, 10207640, 16332224, 20415280, 40830560, 81661120]

約数ペア:

[(1, 81661120), (2, 40830560), (4, 20415280), (5, 16332224), (8, 10207640), (10, 8166112), (16, 5103820), (20, 4083056), (32, 2551910), (40, 2041528), (64, 1275955), (80, 1020764), (160, 510382), (320, 255191)]