77177720

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{4583}}^1$

素因数の和:5015

約数の個数: 32

約数和(自身を含む): 174100320

約数和(自身を除く): 96922600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 4583, 8420, 9166, 16840, 18332, 22915, 36664, 45830, 91660, 183320, 1929443, 3858886, 7717772, 9647215, 15435544, 19294430, 38588860, 77177720]

約数ペア:

[(1, 77177720), (2, 38588860), (4, 19294430), (5, 15435544), (8, 9647215), (10, 7717772), (20, 3858886), (40, 1929443), (421, 183320), (842, 91660), (1684, 45830), (2105, 36664), (3368, 22915), (4210, 18332), (4583, 16840), (8420, 9166)]