81836740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{2213}}^1$

素因数の和:2308

約数の個数: 36

約数和(自身を含む): 176026284

約数和(自身を除く): 94189544

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1849, 2213, 3698, 4426, 7396, 8852, 9245, 11065, 18490, 22130, 36980, 44260, 95159, 190318, 380636, 475795, 951590, 1903180, 4091837, 8183674, 16367348, 20459185, 40918370, 81836740]

約数ペア:

[(1, 81836740), (2, 40918370), (4, 20459185), (5, 16367348), (10, 8183674), (20, 4091837), (43, 1903180), (86, 951590), (172, 475795), (215, 380636), (430, 190318), (860, 95159), (1849, 44260), (2213, 36980), (3698, 22130), (4426, 18490), (7396, 11065), (8852, 9245)]