81339320

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{54959}}^1$

素因数の和:55007

約数の個数: 32

約数和(自身を含む): 187963200

約数和(自身を除く): 106623880

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 54959, 109918, 219836, 274795, 439672, 549590, 1099180, 2033483, 2198360, 4066966, 8133932, 10167415, 16267864, 20334830, 40669660, 81339320]

約数ペア:

[(1, 81339320), (2, 40669660), (4, 20334830), (5, 16267864), (8, 10167415), (10, 8133932), (20, 4066966), (37, 2198360), (40, 2033483), (74, 1099180), (148, 549590), (185, 439672), (296, 274795), (370, 219836), (740, 109918), (1480, 54959)]